by | Sep 27, 2025
PRODUCT PROPERTIES
All time calculations are based on temperatures of 77 F, 25 C
Lab tested with Norox 925
Viscosity
Brookfield RVF, Spindle #2 at 20 rpm 540-680 cps
Thixotropic Index Minimum 3.0
Gel Time
Based on 100g mass catalyzed at 2% MEKP
15 – 18 minutes
Weight per gallon 8.85 lbs
Coverage per gallon, 20 mil thickness 80 sq ft
Maximum VOC
VOC in use
362 g/l
< 232 g/l *
KEY USES
Exterior carbon fiber
parts
Exterior fiberglass parts
Multiple marine
applications (above
waterline)
Outdoor wood furniture
Duratec SunShield Clear Polyester Topcoat represents a breakthrough in
polyester clear coat technology. The topcoat resists yellowing in sunlight;
no sun blocking urethane is required for exterior use. The topcoat
provides a high quality finish with good chemical resistance. This product
has been specially formulated to be easy to sand and polish.
FEATURES
UV RESISTANCE
Resists yellowing when exposed
to sunlight.
EASY APPLICATION
This product is easy to apply and
sand.
PRE-PROMOTED
For safety, consistency and easy
use. Air-cure with no wax
required.
HIGH GLOSS
Polishes to a high gloss wet
look surface.
CHEMICAL RESISTANCE
Highly cross-linked coating
provides excellent chemical
resistance.
STRENGTH & FLEXIBILITY
Excellent flexibility and impact
resistance.
CLEAR SUNSHIELD
POLYESTER TOPCOAT
PRODUCT #904-061
S
AFETY & HANDLING
Sunshield Poly
ester Topcoat is extremely flammable. Do not apply near sparks,
open flames or heat. Keep area ventilated. Do not smoke. Av
oid continuous
breathing of vapor. Sunshield contains ingredients which could be harmful if
mishandled. Contact with skin and eyes should be avoided and necessary
protective equipment and clothi ng should be worn. Individual s
should wash with
soap and water befor e eating or drinking. A ll containers
should be properly labeled
to prevent accidental ingestion or improper disposal. Individuals should resea l any
partly
used material back in the container. Store under cool, dry conditions and
away from open flames
and high temperatures.
For more detailed instructions on storage, please see the MSDS sheet.
DESCRIPTION
909-546-1160
hawkeyesales@hawkeyeind.com
PO BOX 415,
BLOOMINGTON, CA 92316
WWW.DURATEC1.COM
*Note: based on calculations using the UEF table to determine styrene emissions. Local
regulations vary. Consult your local AQMD to confirm actual VOC in use.
CLEAR SUNSHIELD
POLYESTER TOPCOAT
APPLICATION GUIDE | PRODUCT #904-061
The following use instructions are broad to address multiple applications. We recommend testing for product
compatability with your process. Please contact our Tech Team at (909) 546-1160 with any questions.
PLEASE NOTE www.duratec1.com
Prepare & Catalyze
Temperature should be at least 64 F for both the product and the part. Mix Duratec with either a paint
shaker or a drill-mounted mixer. A paint stir stick will not be enough.
Catalyze the Duratec at 2.0 % by weight with a low hydrogen peroxide MEKP, like Norox 925. Only
catalyze what can be used in 12 minutes.
Sunshield is best applied by spraying. We
recommend HVLP air-assisted spray guns. A 1.6 - 1.8mm tip
is recommended. Use 34-40 psi air pressure. Adjust the needle and fan to provide the proper spray.
Additional solvent is not needed for most spray guns. If thinning is required, we suggest the use of
Duratec 39UCE Reducer.
Apply
Option #1: In-Mold Prior to Laminating
Ensure mold is clean and free of silicone. When sprayed in-mold Sunshield we suggest use of a wax mold
release agent like TR108 or honey wax rather than or in conjunction with semi-perm release agents. This
will allow the proper surface tension essential for Sunshield to level and ow across the in-mold surface.
Adjust uid pressure and atomizing air to achieve an even pattern with fne droplets prior to spraying the mold.
The frst pass should be a dust coat that sets up for two minutes before further application. The dust coat
should be a light fog, not a continuous flm.
Additional coats of 4-5 mils can be applied, again allowing a minimum of two minutes to out-gas. Twelve mils
will provide a nice fnish with UV protection. Up to 22 mils can be applied if the part requires aggressive post
sanding.
The coating needs to be tacky free for each build coat to bond. Laminate polyesters and vinyl esters when the
Duratec has set up and does not transfer, but retains some tack. Cure time varies with temperature and air ow.
For epoxy laminating systems, a tack free surface is required. Increased heat up to 120 F will speed this process.
Remember the adhesion comes from the epoxy. Test the bond between the Duratec and your epoxy blend to
assure good adhesion.
W
WW.DURATEC1.COM 909-546-1160 HAWKEYESALES@HAWK EYEIND.COM PO BOX 415, BLOOMINGTON, CA 92316
Limited/ warranty statement: Our products are intended for sale to industrial and commercial customers. We request that customers inspect and test our
products before use and satisfy themselves as to contents and suitability. Nothing herein shall constitute a warranty, expressed or implied, including any
warranty of merchantability or fitness, nor is protection from any law or patent to be inferred. All patent rights are reserved. The exclusive remedy for all
proven claims is replacement of our materials and in no event shall we be liable for special, incidental or consequential damages.
CLEAR SUNSHIELD
POLYESTER TOPCOAT
APPLICATION GUIDE | PRODUCT #904-061
The following use instructions are broad to address multiple applications. We recommend testing for product
compatability with your process. Please contact our Tech Team at (909) 546-1160 with any questions.
PLEASE NOTE
Apply www.duratec1.com
Option #2: Finishing Parts
NOTE: For epoxy laminate, water washing with clean water and a heavy duty scrub sponge pad is
necessary before and after sanding. It is not necessary to water wash polyester or vinyl ester laminates.
Abrade the entire surface with 180 grit, providing mechanical tooth. Remove dust and acetone-wipe the surface.
Set up gun, mix, and catalyze as previously mentioned.
Pro Tip: Sunshield can by applied by brush or roller when topcoating wood.
The Duratec may need to be mechanically forced into severe porosity. The frst 2-3 mil passes can be worked with
a squeegee to fll the holes.
Additional coats can be applied after two minutes and while the surface is still tacky.
If re-coating the full cured Duratec is necessary, frst sand with 180 grit.
The fnal spray should be sanded with 400 grit and allowed to cure for 8 hours prior to fnal polishing.
WWW.DURATEC1.COM 909-546-1160 HAWKEYESALES@HA
WKEYEIND.COM PO BOX 415, BLOOMINGTON, CA 92316
Limited/ warranty statement: Our products are intended for sale to industrial and commercial customers. We request that customers inspect and test our
products before use and satisfy themselves as to contents and suitability. Nothing herein shall constitute a warranty, expressed or implied, including any
warranty of merchantability or fitness, nor is protection from any law or patent to be inferred. All patent rights are reserved. The exclusive remedy for all
proven claims is replacement of our materials and in no event shall we be liable for special, incidental or consequential damages.
CLEAR SUNSHIELD
POLYESTER TOPCOAT
TROUBLESHOOTING | PRODUCT #904-061
Problem Cause Solution
Alligatoring
Not enough catalyst used.
Substrate/primer incompatibility or
chemical reaction.
Check for proper catalyst levels.
Expose surface to higher temperature
before spraying when ambient temp
of below 64 F
, 18 C.
Product sprayed on cold surface.
Check compatibility of surface of product.
Cracking Product sprayed too thickly, too fast.
Increase the number of passes,
adding dwell time between coats.
Dimples (Craters)
Film build up too rapid, solvent
trapped in product.
Increase the number of passes to achieve
desired thickness. Allow for ash o
between passes.
Fisheyes
Substrate contaminated.
Do not use a tack rag . Ensure rag does
not leave contaminant on surface.
Spray in a clean area to minimize airborne
dust, water, waxes, and/or silicones.
Spray with dry fltered air.
Contamination in the air.
Contamination in the line.
Orange Peel
Spray equipment set up incorrectly.
Spray pressure incorrect.
Pot pressure incorrect.
Follow the instructions for equipment
set up.
Set pressure at 34-40 psi.
Set pressure at 10-12 psi.
Pattern surface
sticks to mold
upon release
Pinholes
Porosity
Improper release preparation.
Follow manufacturer s instructions
when applying release materials.
Primer not fully cured before
compounding and polishing.
Excess gel time for tooling gel coat.
Substrate porosity.
Fill porous areas with product using
squeegee, brush or roller before spraying.
Follow instructions in the application
guide for pattern surfacing.
Follow manufacturer s recs for gel time
Acetone used as thinner.
Spray pressure too high.
Spray orifce too small.
Reduce pressure to 34-40 psi.
Use larger orifce.
Use slower solvent such as Duratec
Reducer or MEK
Not using silicone free paste waxUse a silicone free paste wax, like TR 108
by | Sep 27, 2025
PRODUCT PROPERTIES
All time calculations are based on temperatures of 77 F, 25 C
Lab tested with Norox 925 MEKP
Viscosity, #2 spindle, RVF, 20 rpm 390-450 cps
Thixotropic Index min. 3.5
Gel time @ 2% MEKP 17-21 minutes
Weight per gallon 8.68 lbs/gal
Coverage per gallon @ 20 mils 80 sq. feet
KEY USES
Wood and MDF
substrates
Automotive dashboards
Cabinets and furniture
Marine and aircraft
interiors
Musical instruments
A high-build, easy-sand coating designed as a topcoat for cured p olyester,
polyurethan
e and lacquer clear
or color coats. You
will get a superior finish, add
quality and save tim
e and labor with Durat
ec Hi-Gloss Topcoat.
DURATEC CLEAR
HI-GLOSS TOPCOAT
PRODUCT # 904- 046
SAFETY &
HANDLING
Duratec Clear Hi-G loss Topco
at is extremely flammable. Do not apply near
sparks, op
en flames or heat. Keep area ventilated. Do no t smoke. Avoid
continuo
us breathing of vapor. Duratec Clear Hi-Gloss Topcoat co ntains
ing
redients which could be harmful if mishan dled. Co ntact with skin and eyes
should be avoided and necessary
protective equipment and clothin g should b e
worn. Individuals should wash
with soap and water before eating or drinking. All
containers shou
ld be properly labeled to prevent accidental ingestion o r improper
disposal. Individuals sh
ould reseal any partly used material back in the container.
Store under cool,
dry conditions and away from open flames and high
temperatures.
For more
detailed instructions on storage, please see the MSDS sheet.
Liability/
warranty statement: Our products are intended for sale to industrial and commercial customers. We request that
cust
omers inspect and test our products before use and satisfy themselves as to contents and suitability. All claim requests
must
be made in writing and are subject to review, including storage temperature verification and retain evaluations. The
e
xclusive remedy for all proven claims is replacement of our materials. In no event shall we be liable for special, incidental or
con
sequential damages, including damages caused in transit (exworks terms). Nothing herein shall constitute a warranty,
exp
ressed or implied, including any warranty of merchantability or fitness, nor is protection from any law or patent to be
in
ferred. All patent and trademark rights are reserved.
DESCRIPTION
909-546-1160
hawkeyesales@hawkeyeind.com
PO BOX 415,
BLOOMINGTON, CA 92316
WWW.HAWKEYEIND.COM
FEATURES
EASY TO APPLY
Sprayable and quick building, to
10-15 mils, 250-375 microns
thickness.
HIGH GLOSS
Sands easily and polishes to a
non-wax, tackfree high gloss
finish.
ELONGATION/FLEX
Originally designed to work with
wood, this clear offers slightly
more flex than other topcoats.
EASILY TOPCOATED
Can be top coated with lacquers,
enamels, polyurethanes,
varnishes, etc.
to achieve high-
gloss or low
-lust, hand rubbed
finishes.
COMPATIBILITY
Compatible with wood, polyester,
vinyl ester, and most epoxy
substrates.
OTHER CLEAR OPTIONS
904-061 CLEAR SUNSHIELD
(A UV RESISTANT OPTION)
904-040 HI-GLOSS COATING
REVISED JULY 2021
(LESS FLEX, HIGHER DURABILITY)
REVISED
FEBRUARYY 2023
The following use instructions are broad to address multiple applications. We recommend testing for product
compatability with your process. Please contact our Tech Team at (909) 546-1160 with any questions.
PLEASE NOTE
WWW.HAWKEYEIND 909-546-1160 HAWKEYESALES@HAWKE
YEIND.COM PO BOX 415, BLOOMINGTON, CA 92316L La E Ll Lty warranty Vtatement Our product V are Lntended Ior Vale to Lndu Vtr Lal and commerc Lal cu Vtomer V. :e re Tue Vt t Kat cu Vtomer V Ln Vpect and te Vt our product V Ee Iore u Ve and Vat L V Iy
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exclusive remedy for all proven claims is replacement of our materials. In no event shall we be liable for special, incidental or consequential damages, including damages caused in transit
e [wor N V term V . Not K Ln J Kere Ln V Kall con Vt Ltute a warranty e [pre V Ved or Lmpl Led Lnclud Ln J any warranty o I merc Kanta E Ll Lty or I Ltne V V nor L V protect Lon Irom any law or patent to Ee
inferred. All patent and trademark rights are reserved.
yyy0hawkeyeind0eqo
Prepare & Catalyze
Temperature should be at least 64 F for both the product and the part.
Mix with either a paint shaker or a drill-mounted mixer. A paint stir stick will not be enough for a proper mix.
Catalyze the Duratec at 2.0 % by weight with a full strength MEKP, like Norox 925. Catalyze only an
amount that can be sprayed in 15 minutes, typically about a quart if using a HVLP spray gun. Mix well.
Apply
Duratec Hi-Gloss Topcoat should be applied by spraying. We recommend HVLP air-assisted spray guns.
Epoxy laminates should be washed with clean water and a heavy duty scrub sponge before and after
sanding. It is not necessary to water wash polyester, vinyl ester, or wood substrates. Abrade the entire
substrate surface with 180-grit to ensure proper mechanical adhesion. Wipe with a clean cloth. Do not use a
tack rag.
A 1.8 mm tip is recommended. Use 34-40 psi air pressure (at the gun). Adjust the needle and fan to provide
the proper spray. Use the lowest pressures possible to minimize orange peel.
The first coat should be a light dust coat. The
dust coating does not completely cover the surface. Wait at
least two minutes, and apply another light coat. Continue to make build passes of 4-6 mils, with two minute
intervals, until about 20 mils of product is on the surface.
Allow to cure at room temperature for at least one hour. At that time, cure can be accelerated by putting the
part in a warm room at 120 F.
Sand
Once the surface is fully cured, sand to remove any texture or orange peel. Use as fine a grit of paper as
is reasonable. Continue sanding with progressively finer grits, up to 1000 grit paper Allow at least eight
hours after sanding before re-coating or before polishing begins.
Compound and polish to high gloss. We recommend Aqua Buff 1000W or 1000F, followed by Aqua Buff
2000.
DURATEC CLEAR
HI-GLOSS TOPCOAT
APPLICATION GUIDE # 904 – 04 6
Problem Cause Solution
Alligatoring
Not enough catalyst used.
Substrate/primer incompatibility or
chemical reaction.
Check for proper catalyst levels.
Expose surface to higher temperature
before spraying when ambient temp
is below 64 F, 18 C.
Product sprayed on cold surface.
Check compatibility of surface of product.
Curing on surface but
not on substrate
Coating sprayed on cold surface
Expose substrate to higher temperture
before spraying.
Dimples (Craters)
Film build up too rapid, solvent
trapped in product.
Increase the number of passes to achieve
desired thickness. Allow for ash o
between passes.
Fisheyes
Substrate contaminated.
Do not use a tack rag . Ensure rag does
not leave contaminant on surface.
Spray in a clean area to minimize airborne
dust, water, waxes, and/or silicones.
Spray with dry ltered air.
Contamination in the air.
Contamination in the line.
Orange Peel
Spray equipment set up incorrectly.
Spray pressure incorrect.
Pot pressure incorrect.
Follow the instructions for equipment
set up.
Set pressure at 34-40 psi.
Set pressure at 10-12 psi.
Pinholes
Porosity
Substrate porosity.
Fill porous areas with product using
squeegee, brush or roller before spraying.
Acetone used as thinner.
Spray pressure too high.
Spray ori ce too small.
Reduce pressure to 34-40 psi.
Use larger ori ce.
Use slower solvent such as MEK or
Duratec Reducer
Surface not hard
or glossy
Coating not allowed to breathe after sanding
Allow time for solvents to escape before compounding and polishing.
Low reactivity catalyst used / coating under catalyzed.
Catalyze at 2% with full strength MEKP. Do not use 30 percent MEKP or catalyst with less than 8.8 percent active oygen.
DURATEC CLEAR
HI-GLOSS TOPCOAT
TROUBLESHOOTING | PRODUCT 904-046
See the Liability and Warranty Statement on Page 1
by | Sep 27, 2025
PRODUCT PROPERTIES
All time calculations are based on temperatures of 77 F, 25 C
Lab tested with Norox 925 MEKP
Viscosity, #2 spindle, RVF, 20 rpm 420-480 cps
Thixotropic Index min. 2.5
Gel time @ 2% MEKP 8-11 minutes
Weight per gallon 8.4 lbs/gal (approx)
Coverage per gallon @ 20 mils 80 sq. feet
KEY USES
A high-b uild, easy-s and coating designed as a
topcoat for cured polyester,
polyurethane and lacquer clear or
color coats. You will get a superior
finish,
add quality and save time and labor wit
h Duratec Hi-G loss Coating.
FEATURES
EASY TO APPLY
Sprayable and quick building, to
10-15 mils, 250-375 microns
thickness.
DURATEC CLEAR
HI-GLOSS COATING
PRODUCT # 904- 040
S
AFETY & HANDLING
Duratec Clear Hi-Gl o
ss Coating is extremely flammable. Do not apply near sparks,
open
flames or heat. Keep area ventilated. Do not smoke. Avoid continuous
breathing
of vapor. Duratec Clear Hi-G loss Coating contain s ingredients which
could be harmful if mishan
dled. Co ntact with skin and eyes sh ould be avoided and
necessary
protective equipmen t and clothing should be worn. Individuals should
wash with soap and water before
eating or drinking. All containers sh ould be
properly labeled to prevent accidental ingestion o
r improper d isposal. Individuals
should
reseal any partly used material back in the contain er. Store und er cool, dry
conditions and away
from op en flames and high temperatures.
For more detailed instructions on
storage, please see the MSDS sheet.
Liability/warranty statement: Our products are intended for sale to industrial and commercial customers. We request that
customers inspect and test our products before use and satisfy themselves as to contents and suitability. All claim requests
must be made in writing and are subject to review, including storage temperature verification and retain evaluations. The
exclusive remedy for all proven claims is replacement of our materials. In no event shall we be liable for special, incidental or
consequential damages, including damages caused in transit (exworks terms). Nothing herein shall constitute a warranty,
expressed or implied, including any warranty of merchantability or fitness, nor is protection from any law or patent to be
inferred. All patent and trademark rights are reserved.
DESCRIPTION
909-546-1160
hawkeyesales@hawkeyeind.com
PO BOX 415,
BLOOMINGTON, CA 92316
WWW.HAWKEYEIND.COM
COLOR OPTIONS
Black (602-021)
White (614-02 1)
Composite plugs &
patterns.
Automotive dashboards
Cabinets and furniture
Marine and
aircraft
interiors
Upgrading tooling gelcoats
HIGH GLOSS
Sands
easily and polishes to a
non
-wax, tackfree high gloss
finish.
RESIST
S FISHEYES Unique
additives
reduce the risk of
fi
sheyes and pinhol es during the
s
pray application.
ULTIMATE DURABILITY
Coating produced a hard, durable
surface with fantastic scratch
resistance for high-use areas.
COMPATIBILITY
Compatible with wood, polyester,
vinyl ester, and most epoxy
substrates.
REVISED FEBRUARY 2023
DURATEC CLEAR
HI-GLOSS COATING
APPLIC ATION GUIDE | PR ODUC T #904-040
The following use instructions are broad to address multiple applications. We recommend testing for product
compatability with your process. Please contact our Tech Team at (909) 546-1160 with any questions.
PLEASE NOTE
WWW.HAWKEYEIND.COM 909-546-1160 HAWKEYESALES@HAWK
EYEIND.COM PO BOX 415, BLOOMINGTON, CA 92316Lia Eili Wy wa U Uan Wy s Wa Wemen W O X U S Uod Xc Ws a Ue in Wended Io U sale Wo ind Xs W Uial and comme Ucial c Xs Wome Us. We Ue T Xes W Wha W c Xs Wome Us ins Sec W and Wes W o X U S Uod Xc Ws Ee Io Ue Xse and sa Wis Iy
Whemsel Yes as Wo con Wen Ws and s Xi Wa Eili Wy. All claim Ue T Xes Ws m Xs W Ee made in w Ui Win J and a Ue s X E Mec W Wo Ue Yiew, incl Xdin J s Wo Ua Je Wem Se Ua W X Ue Ye Ui Iica Wion and Ue Wain e Yal Xa Wions. The
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e [wo Uks We Ums . No Whin J he Uein shall cons Wi W X We a wa U Uan Wy, e [ S Uessed o U im Slied, incl Xdin J any wa U Uan Wy o I me Uchan Wa Eili Wy o U Ii Wness, no U is S Uo Wec Wion I Uom any law o U Sa Wen W Wo Ee
in Ie U Ued. All Sa Wen W and W Uadema Uk Ui Jh Ws a Ue Uese U Yed.
www.hawkeyeind.com
Prepare & Catalyze
Temperature should be at least 64 F for both the product and the part.
Mix with either a paint shaker or a drill-mounted mixer. A paint stir stick will not be enough for a proper mix.
Catalyze the Duratec at 2.0 % by weight with a full strength MEKP, like Norox 925. Catalyze only an
amount that can be sprayed in 15 minutes, typically about a quart if using a HVLP spray gun. Mix well.
Apply
Duratec Hi-Gloss Coating should be applied by spraying. We recommend HVLP air-assisted spray guns.
Epoxy laminates should be washed with clean water and a heavy duty scrub sponge before and after
sanding. It is not necessary to water wash polyester, vinyl ester, or wood substrates. Abrade the entire
substrate surface with 180-grit to ensure proper mechanical adhesion. Wipe with a clean cloth. Do not use a
tack rag.
A 1.8 mm tip is recommended. Use 34-40 psi air pressure (at the gun). Adjust the needle and fan to provide
the proper spray. Use the lowest pressures possible to minimize orange peel.
The first coat should be a light dust coat. The dust coating does not completely cover the surface. Wait at
least two minutes, and apply another light coat. Continue to make build passes of 4-6 mils, with two minute
intervals, until about 20 mils of product is on the surface.
Allow to cure at room temperature for at least one hour. At that time, cure can be accelerated by putting the
part in a warm room at 120 F
.
Sand
Once the surface is fully cured, sand to remove any texture or orange peel. Use as fine a grit of paper as
is reasonable. Continue sanding with progressively finer grits, up to 1000 grit paper Allow at least eight
hours after sanding before re-coating or before polishing begins.
Compound and polish to high gloss. We recommend Aqua Buff 1000W or 1000F, followed by Aqua Buff
2000.
DURATEC CLEAR
HI-GLOSS COATING
TROUBLESHOOTING | PRODUC T #9
04-040
Problem Cause Solution
Alligatoring
Not enough catalyst used.
Substrate/primer incompatibility or
chemical reaction.
Check for proper catalyst levels.
Expose surface to higher
temperature before spraying when
ambient temp is below 64 F, 18 C.
Product sprayed on cold surface.
Check compatibility of surface of product.
Curing on surface but
not on substrate
Coating sprayed on cold surface
Expose substrate to higher temperture
before spraying.
Dimples (Craters)
Film build up too rapid, solvent
trapped in product.
Increase the number of passes to achieve
desired thickness. Allow for ash o
between passes.
Fisheyes
Substrate contaminated.
Do not use a tack rag . Ensure rag does
not leave contaminant on surface.
Spray in a clean area to minimize airborne
dust, water, waxes, and/or silicones.
Spray with dry fltered air.
Contamination in the air.
Contamination in the line.
Orange Peel
Spray equipment set up incorrectly.
Spray pressure incorrect.
Pot pressure incorrect.
Follow the instructions for equipment
set up.
Set pressure at 34-40 psi.
Set pressure at 10-12 psi.
Pinholes
Porosity
Substrate porosity.
Fill porous areas with product using
squeegee, brush or roller before spraying.
Acetone used as thinner.
Spray pressure too high.
Spray orifce too small.
Reduce pressure to 34-40 psi.
Use larger orifce.
Use slower solvent such as MEK or
Duratec Reducer
Surface not hard
or glossy
Coating not allowed to breathe after sanding
Allow time for solvents to escape before compounding and polishing.
Low reactivity catalyst used / coating under catalyzed.
Catalyze at 2% with full strength MEKP. Do not use 30 percent MEKP or catalyst with less than 8.8 percent active oygen.
See the Liability and Warranty Statement on Page 1
by | Sep 27, 2025
PRODUCT PROPERTIES
All time calculations are based on temperatures of 77 F, 25 C
Lab tested with Norox 925 MEKP
Gel time @ 2% MEKP 14-18 mi nutes
Weight per gallon 8.54 lbs/gal
% Solid Content 52%
% VOC 48%
Wt% HAPs 34%
With over 30 years of successful use, Duratec Hi- Gloss Additive is the proven
leader for post-application gel coat work. Hi-Gloss Additive converts gel coat to
air-cure chemistry, leading to a smooth, porcelain-hard surface. Use this product
in applications such as complete gel coat resurfacing, plug and pattern
manufacturing, and gel coat repair. Blend with the original gel coat to match to
desired color. Make gel coat repair come out perfectly every time!
FEATURES
NO DULL SURFACE
Additive eliminates the need for
wax & PVA creating a superior
finish.
ELIMINATES LOW-GLOSS
Especially areas on the edges of
repairs, like the low-gloss donut
often seen in gel coat repairs.
BETTER PROFILE
Flat & smooth profile compared to
un-modified gel coat or gel coat
with wax & styrene.
REDUCED POROSITY
In tooling gelcoat. Improves air
release, thus preventing porosity.
FASTE R & EASIER REPAIR
The air-cure blend created with
gelcoat cures fast and hard,
creating a shiny smooth surface
that is easy to sand.
.
DURATEC CLEAR
HI-GLOSS ADDITIVE
PRODUCT # 904-001
SA
FETY & HANDLING
Duratec
Hi-Gloss Additive is extremely flammable. Do not apply near sparks,
open
flames or heat. Keep area ventilated. Do not smoke. Avoid continuous
breathi
ng of vapor. Duratec Hi-Gloss Additive contains ingredients which could be
harmful
if mishandled. Contact with skin and
eyes should be avoided and
necessary protective equipment and clothing should be worn. Individuals should
wash
with soap and water before eating or drinking. All containers should be
properl
y labeled to prevent accidental ingestion or improper disposal. Individuals
should
reseal any partly used material back in the container. Store under cool, dry
conditions
and away from open flames and high temperatures.
For
more detailed instructions on storage, please see the MSDS sheet.
DESCRIPTION
909-546-1160
hawkeyesales@hawkeyeind.com
PO BOX 415,
BLOOMINGTON, CA 92316
WWW.DURATEC1.COM
MAKE YOUR
GELCOAT
SPRAY LIKE
PAINT
DURATEC CLEAR
HI-GLOSS ADDITIVE
APPLICATION GUIDE | PRODUCT #904-001
Catalyze with full strength MEKP catalyst at 2%, like Norox 925 (about 20 mill
iliters per quart).
Spray 3-4 passes over the repair, building up 12-15 mils. Allow at least two minutes between
passes. Do not allow the Duratec/gelcoat to cure beyond the sticky/thumbprint stage between
coats… usually about 30 minutes at 77 F when sprayed, faster in the cup. Feather the edge of
the repaired area.
Prepare
Temperature should be at least 64 F. Low temperatures extend cure time.
A test blend is recommended
, as every blend is unique and the cure must be tested and assured.
The cure time of the blend will vary, as every gelcoat is di erent. Note the cup-gel time.
If repairing, remove or
fx any cracked or damaged gelcoat. Grind out cracks down to the laminate.
Repair laminate or assure the laminate is sound. We recommend Duratec Vinyl Ester Mold Repair Putty
(1800 Series) for laminate repair.
Sand with 180 grit to a few inches outside the repair area. Bevel the edge of the existing gelcoat.
Blend
OPTION #1: 1 part (25%) Duratec 904-001, 3 parts (75%) gelcoat.
Recommended to maximize the hide (opacity). If opacity is not an issue, use option #2.
The following use instructions are broad to address multiple applications. We recommend testing for product
compatability with your process. Please contact our Tech Team at (909) 546-1160 with any questions.
PLEASE NOTE
1
2
Catalyze with full strength MEKP catalyst at 2%, like Norox 925 (about 20 milliliters
per quart).
Spray at least 2 passes over the repair, building up an additional 8 mils or more to match
surface. Be sure to get back onto the first passes while they are sticky.
Cover all the
previously coated area.
Feather the edge of the repaired area.
NOTE: if you are not doing a repair area, and instead covering
an entire surface, build up 18+
mils overall, 5-7 mils at a time while
allowing out-gassing to occur between passes.
Once surface cure is sandable (approx. 2-4 hours) sand as outlined below to cut surface and allow full
cure.
1
2
Once surface cure is sandable (approx. 2-4 hours) sand as outlined below to cut surface and allow full
cure.
OPTION #2: 1 part (50%) Duratec 904-001, 1 part (50%) gelcoat.
Recommended for all repairs where opacitiy is not an issue. Not recommended for dark colors.
[CONTINUED ON NEXT PAGE]
DURATEC CLEAR
HI-GLOSS ADDITIVE
APPLICATION GUIDE | PRODUCT #904-001
Limited/ warranty statement: Our products are intended for sale to industrial and commercial customers. We request that customers inspect and test our
products before use and satisfy themselves as to contents and suitability. Nothing herein shall constitute a warranty, expressed or implied, including any
warranty of merchantability or fitness, nor is protection from any law or patent to be inferred. All patent rights are reserved. The exclusive remedy for all
proven claims is replacement of our materials and in no event shall we be liable for special, incidental or consequential damages.
WWW.DURATEC1.COM 909-546-1160 HAWKEYESALES@HAWKEYEIND.COM PO BOX 415, BLOOMINGTON, CA 92316www.duratec1.com
The following use instructions are broad to address multiple applications. We recommend testing for product
compatability with your process. Please contact our Tech Team at (909) 546-1160 with any questions.
PLEASE NOTE
Catalyze with full strength MEKP catalyst at 2% (about 20 mililiters per quart).
Spray at least 2 passes over the repair, building up an additional 8 mils or more. Be sure to get
back on
to the frst passes while they are sticky. Cover all the previously coated area. Feather the
edge of the repaired area.
OPTION #3: Blend 10-25% Duratec 904-001 into the tooling gelcoat for a gelcoat upgrade.
This will improve the fow and spray characteristics of tooling gelcoat.
1
2
Once surface cure is sandable (approx. 2-4 hours) sand as outlined below to cut surface and allow
full cure.
Sand
Sand
when the surface has cured enough to not clog your paper. Start with the finest grit that is
reasonable for the surface finish. With a good finish starting with 400 grit is possible.
The surface must be open for at least 8 hours between initial sanding and polishing. The open time
allows for styrene release and full cure.
Sand with progressively finer grits like 400, 600, 800, 1000. Compound and polish with products
formu-lated for gelcoat like Aqua Buff 1000 and Aqua Buff 2000.
Cure Times
Duratec High Gloss Additive is an air-cure product. Each gelcoat manufacturer and color option will
have a different cure time. Those cure times, combined with factors like ambient temperature,
humidity, catalyst ratio, and mil depth can result in a spectrum of cure times. Some surfaces will be
ready within two hours, others may take more than 24-hours for full cure. Avoid spraying in
temperatures below 64 F, and where possible, increase heat near part to improve cure time.
DURATEC CLEAR
HI-GLOSS ADDITIVE
TROUBLESHOOTING | PRODUCT #904-001
Problem Cause Solution
Possible incompatibility between
additive and gelcoat.
Check both products separately for cure;
if ok, the products are not compatible.
High humidity.
Apply heat or spray in controlled humidity environment.1:1 Blend with gelcoat
fails to cure
Cool temperatures.
Fisheyes
Spray in controlled temperature environment.
Possible incompatability between additive and gelcoat.
Air contaminiation. (The lower viscosity of the additive/gel coat blend increases the susceptibility to fsheyes).
Check water and oil fltration in the air line.
Check both products separately for cure; if ok, the proucts are not compatible.
Improper catalyst used.
Ensure using full strength catalyst at the recommended 2% ratio.
by | Sep 27, 2025
PRODUCT PROPERTIES
All time calculations are based on temperatures of 77 F, 25 C
Lab tested with Norox 925 MEKP
Gel time @ 2% MEKP 14-18 mi nutes
Weight per gallon 8.54 lbs/gal
% Solid Content 52%
% VOC 48%
Wt% HAPs 34%
With over 30 years of successful use, Duratec Hi- Gloss Additive is the proven
leader for post-application gel coat work. Hi-Gloss Additive converts gel coat to
air-cure chemistry, leading to a smooth, porcelain-hard surface. Use this product
in applications such as complete gel coat resurfacing, plug and pattern
manufacturing, and gel coat repair. Blend with the original gel coat to match to
desired color. Make gel coat repair come out perfectly every time!
FEATURES
NO DULL SURFACE
Additive eliminates the need for
wax & PVA creating a superior
finish.
ELIMINATES LOW-GLOSS
Especially areas on the edges of
repairs, like the low-gloss donut
often seen in gel coat repairs.
BETTER PROFILE
Flat & smooth profile compared to
un-modified gel coat or gel coat
with wax & styrene.
REDUCED POROSITY
In tooling gelcoat. Improves air
release, thus preventing porosity.
FASTE R & EASIER REPAIR
The air-cure blend created with
gelcoat cures fast and hard,
creating a shiny smooth surface
that is easy to sand.
.
DURATEC CLEAR
HI-GLOSS ADDITIVE
PRODUCT # 904-001
SA
FETY & HANDLING
Duratec
Hi-Gloss Additive is extremely flammable. Do not apply near sparks,
open
flames or heat. Keep area ventilated. Do not smoke. Avoid continuous
breathi
ng of vapor. Duratec Hi-Gloss Additive contains ingredients which could be
harmful
if mishandled. Contact with skin and
eyes should be avoided and
necessary protective equipment and clothing should be worn. Individuals should
wash
with soap and water before eating or drinking. All containers should be
properl
y labeled to prevent accidental ingestion or improper disposal. Individuals
should
reseal any partly used material back in the container. Store under cool, dry
conditions
and away from open flames and high temperatures.
For
more detailed instructions on storage, please see the MSDS sheet.
DESCRIPTION
909-546-1160
hawkeyesales@hawkeyeind.com
PO BOX 415,
BLOOMINGTON, CA 92316
WWW.DURATEC1.COM
MAKE YOUR
GELCOAT
SPRAY LIKE
PAINT
DURATEC CLEAR
HI-GLOSS ADDITIVE
APPLICATION GUIDE | PRODUCT #904-001
Catalyze with full strength MEKP catalyst at 2%, like Norox 925 (about 20 mill
iliters per quart).
Spray 3-4 passes over the repair, building up 12-15 mils. Allow at least two minutes between
passes. Do not allow the Duratec/gelcoat to cure beyond the sticky/thumbprint stage between
coats… usually about 30 minutes at 77 F when sprayed, faster in the cup. Feather the edge of
the repaired area.
Prepare
Temperature should be at least 64 F. Low temperatures extend cure time.
A test blend is recommended
, as every blend is unique and the cure must be tested and assured.
The cure time of the blend will vary, as every gelcoat is di erent. Note the cup-gel time.
If repairing, remove or
fx any cracked or damaged gelcoat. Grind out cracks down to the laminate.
Repair laminate or assure the laminate is sound. We recommend Duratec Vinyl Ester Mold Repair Putty
(1800 Series) for laminate repair.
Sand with 180 grit to a few inches outside the repair area. Bevel the edge of the existing gelcoat.
Blend
OPTION #1: 1 part (25%) Duratec 904-001, 3 parts (75%) gelcoat.
Recommended to maximize the hide (opacity). If opacity is not an issue, use option #2.
The following use instructions are broad to address multiple applications. We recommend testing for product
compatability with your process. Please contact our Tech Team at (909) 546-1160 with any questions.
PLEASE NOTE
1
2
Catalyze with full strength MEKP catalyst at 2%, like Norox 925 (about 20 milliliters
per quart).
Spray at least 2 passes over the repair, building up an additional 8 mils or more to match
surface. Be sure to get back onto the first passes while they are sticky.
Cover all the
previously coated area.
Feather the edge of the repaired area.
NOTE: if you are not doing a repair area, and instead covering
an entire surface, build up 18+
mils overall, 5-7 mils at a time while
allowing out-gassing to occur between passes.
Once surface cure is sandable (approx. 2-4 hours) sand as outlined below to cut surface and allow full
cure.
1
2
Once surface cure is sandable (approx. 2-4 hours) sand as outlined below to cut surface and allow full
cure.
OPTION #2: 1 part (50%) Duratec 904-001, 1 part (50%) gelcoat.
Recommended for all repairs where opacitiy is not an issue. Not recommended for dark colors.
[CONTINUED ON NEXT PAGE]
DURATEC CLEAR
HI-GLOSS ADDITIVE
APPLICATION GUIDE | PRODUCT #904-001
Limited/ warranty statement: Our products are intended for sale to industrial and commercial customers. We request that customers inspect and test our
products before use and satisfy themselves as to contents and suitability. Nothing herein shall constitute a warranty, expressed or implied, including any
warranty of merchantability or fitness, nor is protection from any law or patent to be inferred. All patent rights are reserved. The exclusive remedy for all
proven claims is replacement of our materials and in no event shall we be liable for special, incidental or consequential damages.
WWW.DURATEC1.COM 909-546-1160 HAWKEYESALES@HAWKEYEIND.COM PO BOX 415, BLOOMINGTON, CA 92316www.duratec1.com
The following use instructions are broad to address multiple applications. We recommend testing for product
compatability with your process. Please contact our Tech Team at (909) 546-1160 with any questions.
PLEASE NOTE
Catalyze with full strength MEKP catalyst at 2% (about 20 mililiters per quart).
Spray at least 2 passes over the repair, building up an additional 8 mils or more. Be sure to get
back on
to the frst passes while they are sticky. Cover all the previously coated area. Feather the
edge of the repaired area.
OPTION #3: Blend 10-25% Duratec 904-001 into the tooling gelcoat for a gelcoat upgrade.
This will improve the fow and spray characteristics of tooling gelcoat.
1
2
Once surface cure is sandable (approx. 2-4 hours) sand as outlined below to cut surface and allow
full cure.
Sand
Sand
when the surface has cured enough to not clog your paper. Start with the finest grit that is
reasonable for the surface finish. With a good finish starting with 400 grit is possible.
The surface must be open for at least 8 hours between initial sanding and polishing. The open time
allows for styrene release and full cure.
Sand with progressively finer grits like 400, 600, 800, 1000. Compound and polish with products
formu-lated for gelcoat like Aqua Buff 1000 and Aqua Buff 2000.
Cure Times
Duratec High Gloss Additive is an air-cure product. Each gelcoat manufacturer and color option will
have a different cure time. Those cure times, combined with factors like ambient temperature,
humidity, catalyst ratio, and mil depth can result in a spectrum of cure times. Some surfaces will be
ready within two hours, others may take more than 24-hours for full cure. Avoid spraying in
temperatures below 64 F, and where possible, increase heat near part to improve cure time.
DURATEC CLEAR
HI-GLOSS ADDITIVE
TROUBLESHOOTING | PRODUCT #904-001
Problem Cause Solution
Possible incompatibility between
additive and gelcoat.
Check both products separately for cure;
if ok, the products are not compatible.
High humidity.
Apply heat or spray in controlled humidity environment.1:1 Blend with gelcoat
fails to cure
Cool temperatures.
Fisheyes
Spray in controlled temperature environment.
Possible incompatability between additive and gelcoat.
Air contaminiation. (The lower viscosity of the additive/gel coat blend increases the susceptibility to fsheyes).
Check water and oil fltration in the air line.
Check both products separately for cure; if ok, the proucts are not compatible.
Improper catalyst used.
Ensure using full strength catalyst at the recommended 2% ratio.
by | Sep 27, 2025
PRODUCT PROPERTIES
All time calculations are based on temperatures of 77 F, 25 C
Lab tested with Norox 925 MEKP
Gel time @ 2% MEKP 14-18 mi nutes
Weight per gallon 8.54 lbs/gal
% Solid Content 52%
% VOC 48%
Wt% HAPs 34%
With over 30 years of successful use, Duratec Hi- Gloss Additive is the proven
leader for post-application gel coat work. Hi-Gloss Additive converts gel coat to
air-cure chemistry, leading to a smooth, porcelain-hard surface. Use this product
in applications such as complete gel coat resurfacing, plug and pattern
manufacturing, and gel coat repair. Blend with the original gel coat to match to
desired color. Make gel coat repair come out perfectly every time!
FEATURES
NO DULL SURFACE
Additive eliminates the need for
wax & PVA creating a superior
finish.
ELIMINATES LOW-GLOSS
Especially areas on the edges of
repairs, like the low-gloss donut
often seen in gel coat repairs.
BETTER PROFILE
Flat & smooth profile compared to
un-modified gel coat or gel coat
with wax & styrene.
REDUCED POROSITY
In tooling gelcoat. Improves air
release, thus preventing porosity.
FASTE R & EASIER REPAIR
The air-cure blend created with
gelcoat cures fast and hard,
creating a shiny smooth surface
that is easy to sand.
.
DURATEC CLEAR
HI-GLOSS ADDITIVE
PRODUCT # 904-001
SA
FETY & HANDLING
Duratec
Hi-Gloss Additive is extremely flammable. Do not apply near sparks,
open
flames or heat. Keep area ventilated. Do not smoke. Avoid continuous
breathi
ng of vapor. Duratec Hi-Gloss Additive contains ingredients which could be
harmful
if mishandled. Contact with skin and
eyes should be avoided and
necessary protective equipment and clothing should be worn. Individuals should
wash
with soap and water before eating or drinking. All containers should be
properl
y labeled to prevent accidental ingestion or improper disposal. Individuals
should
reseal any partly used material back in the container. Store under cool, dry
conditions
and away from open flames and high temperatures.
For
more detailed instructions on storage, please see the MSDS sheet.
DESCRIPTION
909-546-1160
hawkeyesales@hawkeyeind.com
PO BOX 415,
BLOOMINGTON, CA 92316
WWW.DURATEC1.COM
MAKE YOUR
GELCOAT
SPRAY LIKE
PAINT
DURATEC CLEAR
HI-GLOSS ADDITIVE
APPLICATION GUIDE | PRODUCT #904-001
Catalyze with full strength MEKP catalyst at 2%, like Norox 925 (about 20 mill
iliters per quart).
Spray 3-4 passes over the repair, building up 12-15 mils. Allow at least two minutes between
passes. Do not allow the Duratec/gelcoat to cure beyond the sticky/thumbprint stage between
coats… usually about 30 minutes at 77 F when sprayed, faster in the cup. Feather the edge of
the repaired area.
Prepare
Temperature should be at least 64 F. Low temperatures extend cure time.
A test blend is recommended
, as every blend is unique and the cure must be tested and assured.
The cure time of the blend will vary, as every gelcoat is di erent. Note the cup-gel time.
If repairing, remove or
fx any cracked or damaged gelcoat. Grind out cracks down to the laminate.
Repair laminate or assure the laminate is sound. We recommend Duratec Vinyl Ester Mold Repair Putty
(1800 Series) for laminate repair.
Sand with 180 grit to a few inches outside the repair area. Bevel the edge of the existing gelcoat.
Blend
OPTION #1: 1 part (25%) Duratec 904-001, 3 parts (75%) gelcoat.
Recommended to maximize the hide (opacity). If opacity is not an issue, use option #2.
The following use instructions are broad to address multiple applications. We recommend testing for product
compatability with your process. Please contact our Tech Team at (909) 546-1160 with any questions.
PLEASE NOTE
1
2
Catalyze with full strength MEKP catalyst at 2%, like Norox 925 (about 20 milliliters
per quart).
Spray at least 2 passes over the repair, building up an additional 8 mils or more to match
surface. Be sure to get back onto the first passes while they are sticky.
Cover all the
previously coated area.
Feather the edge of the repaired area.
NOTE: if you are not doing a repair area, and instead covering
an entire surface, build up 18+
mils overall, 5-7 mils at a time while
allowing out-gassing to occur between passes.
Once surface cure is sandable (approx. 2-4 hours) sand as outlined below to cut surface and allow full
cure.
1
2
Once surface cure is sandable (approx. 2-4 hours) sand as outlined below to cut surface and allow full
cure.
OPTION #2: 1 part (50%) Duratec 904-001, 1 part (50%) gelcoat.
Recommended for all repairs where opacitiy is not an issue. Not recommended for dark colors.
[CONTINUED ON NEXT PAGE]
DURATEC CLEAR
HI-GLOSS ADDITIVE
APPLICATION GUIDE | PRODUCT #904-001
Limited/ warranty statement: Our products are intended for sale to industrial and commercial customers. We request that customers inspect and test our
products before use and satisfy themselves as to contents and suitability. Nothing herein shall constitute a warranty, expressed or implied, including any
warranty of merchantability or fitness, nor is protection from any law or patent to be inferred. All patent rights are reserved. The exclusive remedy for all
proven claims is replacement of our materials and in no event shall we be liable for special, incidental or consequential damages.
WWW.DURATEC1.COM 909-546-1160 HAWKEYESALES@HAWKEYEIND.COM PO BOX 415, BLOOMINGTON, CA 92316www.duratec1.com
The following use instructions are broad to address multiple applications. We recommend testing for product
compatability with your process. Please contact our Tech Team at (909) 546-1160 with any questions.
PLEASE NOTE
Catalyze with full strength MEKP catalyst at 2% (about 20 mililiters per quart).
Spray at least 2 passes over the repair, building up an additional 8 mils or more. Be sure to get
back on
to the frst passes while they are sticky. Cover all the previously coated area. Feather the
edge of the repaired area.
OPTION #3: Blend 10-25% Duratec 904-001 into the tooling gelcoat for a gelcoat upgrade.
This will improve the fow and spray characteristics of tooling gelcoat.
1
2
Once surface cure is sandable (approx. 2-4 hours) sand as outlined below to cut surface and allow
full cure.
Sand
Sand
when the surface has cured enough to not clog your paper. Start with the finest grit that is
reasonable for the surface finish. With a good finish starting with 400 grit is possible.
The surface must be open for at least 8 hours between initial sanding and polishing. The open time
allows for styrene release and full cure.
Sand with progressively finer grits like 400, 600, 800, 1000. Compound and polish with products
formu-lated for gelcoat like Aqua Buff 1000 and Aqua Buff 2000.
Cure Times
Duratec High Gloss Additive is an air-cure product. Each gelcoat manufacturer and color option will
have a different cure time. Those cure times, combined with factors like ambient temperature,
humidity, catalyst ratio, and mil depth can result in a spectrum of cure times. Some surfaces will be
ready within two hours, others may take more than 24-hours for full cure. Avoid spraying in
temperatures below 64 F, and where possible, increase heat near part to improve cure time.
DURATEC CLEAR
HI-GLOSS ADDITIVE
TROUBLESHOOTING | PRODUCT #904-001
Problem Cause Solution
Possible incompatibility between
additive and gelcoat.
Check both products separately for cure;
if ok, the products are not compatible.
High humidity.
Apply heat or spray in controlled humidity environment.1:1 Blend with gelcoat
fails to cure
Cool temperatures.
Fisheyes
Spray in controlled temperature environment.
Possible incompatability between additive and gelcoat.
Air contaminiation. (The lower viscosity of the additive/gel coat blend increases the susceptibility to fsheyes).
Check water and oil fltration in the air line.
Check both products separately for cure; if ok, the proucts are not compatible.
Improper catalyst used.
Ensure using full strength catalyst at the recommended 2% ratio.
by | Sep 27, 2025
PRODUCT PROPERTIES
All time calculations are based on temperatures of 77 F, 25 C
Lab tested with Norox 925 MEKP
Gel time @ 2% MEKP 14-18 mi nutes
Weight per gallon 8.54 lbs/gal
% Solid Content 52%
% VOC 48%
Wt% HAPs 34%
With over 30 years of successful use, Duratec Hi- Gloss Additive is the proven
leader for post-application gel coat work. Hi-Gloss Additive converts gel coat to
air-cure chemistry, leading to a smooth, porcelain-hard surface. Use this product
in applications such as complete gel coat resurfacing, plug and pattern
manufacturing, and gel coat repair. Blend with the original gel coat to match to
desired color. Make gel coat repair come out perfectly every time!
FEATURES
NO DULL SURFACE
Additive eliminates the need for
wax & PVA creating a superior
finish.
ELIMINATES LOW-GLOSS
Especially areas on the edges of
repairs, like the low-gloss donut
often seen in gel coat repairs.
BETTER PROFILE
Flat & smooth profile compared to
un-modified gel coat or gel coat
with wax & styrene.
REDUCED POROSITY
In tooling gelcoat. Improves air
release, thus preventing porosity.
FASTE R & EASIER REPAIR
The air-cure blend created with
gelcoat cures fast and hard,
creating a shiny smooth surface
that is easy to sand.
.
DURATEC CLEAR
HI-GLOSS ADDITIVE
PRODUCT # 904-001
SA
FETY & HANDLING
Duratec
Hi-Gloss Additive is extremely flammable. Do not apply near sparks,
open
flames or heat. Keep area ventilated. Do not smoke. Avoid continuous
breathi
ng of vapor. Duratec Hi-Gloss Additive contains ingredients which could be
harmful
if mishandled. Contact with skin and
eyes should be avoided and
necessary protective equipment and clothing should be worn. Individuals should
wash
with soap and water before eating or drinking. All containers should be
properl
y labeled to prevent accidental ingestion or improper disposal. Individuals
should
reseal any partly used material back in the container. Store under cool, dry
conditions
and away from open flames and high temperatures.
For
more detailed instructions on storage, please see the MSDS sheet.
DESCRIPTION
909-546-1160
hawkeyesales@hawkeyeind.com
PO BOX 415,
BLOOMINGTON, CA 92316
WWW.DURATEC1.COM
MAKE YOUR
GELCOAT
SPRAY LIKE
PAINT
DURATEC CLEAR
HI-GLOSS ADDITIVE
APPLICATION GUIDE | PRODUCT #904-001
Catalyze with full strength MEKP catalyst at 2%, like Norox 925 (about 20 mill
iliters per quart).
Spray 3-4 passes over the repair, building up 12-15 mils. Allow at least two minutes between
passes. Do not allow the Duratec/gelcoat to cure beyond the sticky/thumbprint stage between
coats… usually about 30 minutes at 77 F when sprayed, faster in the cup. Feather the edge of
the repaired area.
Prepare
Temperature should be at least 64 F. Low temperatures extend cure time.
A test blend is recommended
, as every blend is unique and the cure must be tested and assured.
The cure time of the blend will vary, as every gelcoat is di erent. Note the cup-gel time.
If repairing, remove or
fx any cracked or damaged gelcoat. Grind out cracks down to the laminate.
Repair laminate or assure the laminate is sound. We recommend Duratec Vinyl Ester Mold Repair Putty
(1800 Series) for laminate repair.
Sand with 180 grit to a few inches outside the repair area. Bevel the edge of the existing gelcoat.
Blend
OPTION #1: 1 part (25%) Duratec 904-001, 3 parts (75%) gelcoat.
Recommended to maximize the hide (opacity). If opacity is not an issue, use option #2.
The following use instructions are broad to address multiple applications. We recommend testing for product
compatability with your process. Please contact our Tech Team at (909) 546-1160 with any questions.
PLEASE NOTE
1
2
Catalyze with full strength MEKP catalyst at 2%, like Norox 925 (about 20 milliliters
per quart).
Spray at least 2 passes over the repair, building up an additional 8 mils or more to match
surface. Be sure to get back onto the first passes while they are sticky.
Cover all the
previously coated area.
Feather the edge of the repaired area.
NOTE: if you are not doing a repair area, and instead covering
an entire surface, build up 18+
mils overall, 5-7 mils at a time while
allowing out-gassing to occur between passes.
Once surface cure is sandable (approx. 2-4 hours) sand as outlined below to cut surface and allow full
cure.
1
2
Once surface cure is sandable (approx. 2-4 hours) sand as outlined below to cut surface and allow full
cure.
OPTION #2: 1 part (50%) Duratec 904-001, 1 part (50%) gelcoat.
Recommended for all repairs where opacitiy is not an issue. Not recommended for dark colors.
[CONTINUED ON NEXT PAGE]
DURATEC CLEAR
HI-GLOSS ADDITIVE
APPLICATION GUIDE | PRODUCT #904-001
Limited/ warranty statement: Our products are intended for sale to industrial and commercial customers. We request that customers inspect and test our
products before use and satisfy themselves as to contents and suitability. Nothing herein shall constitute a warranty, expressed or implied, including any
warranty of merchantability or fitness, nor is protection from any law or patent to be inferred. All patent rights are reserved. The exclusive remedy for all
proven claims is replacement of our materials and in no event shall we be liable for special, incidental or consequential damages.
WWW.DURATEC1.COM 909-546-1160 HAWKEYESALES@HAWKEYEIND.COM PO BOX 415, BLOOMINGTON, CA 92316www.duratec1.com
The following use instructions are broad to address multiple applications. We recommend testing for product
compatability with your process. Please contact our Tech Team at (909) 546-1160 with any questions.
PLEASE NOTE
Catalyze with full strength MEKP catalyst at 2% (about 20 mililiters per quart).
Spray at least 2 passes over the repair, building up an additional 8 mils or more. Be sure to get
back on
to the frst passes while they are sticky. Cover all the previously coated area. Feather the
edge of the repaired area.
OPTION #3: Blend 10-25% Duratec 904-001 into the tooling gelcoat for a gelcoat upgrade.
This will improve the fow and spray characteristics of tooling gelcoat.
1
2
Once surface cure is sandable (approx. 2-4 hours) sand as outlined below to cut surface and allow
full cure.
Sand
Sand
when the surface has cured enough to not clog your paper. Start with the finest grit that is
reasonable for the surface finish. With a good finish starting with 400 grit is possible.
The surface must be open for at least 8 hours between initial sanding and polishing. The open time
allows for styrene release and full cure.
Sand with progressively finer grits like 400, 600, 800, 1000. Compound and polish with products
formu-lated for gelcoat like Aqua Buff 1000 and Aqua Buff 2000.
Cure Times
Duratec High Gloss Additive is an air-cure product. Each gelcoat manufacturer and color option will
have a different cure time. Those cure times, combined with factors like ambient temperature,
humidity, catalyst ratio, and mil depth can result in a spectrum of cure times. Some surfaces will be
ready within two hours, others may take more than 24-hours for full cure. Avoid spraying in
temperatures below 64 F, and where possible, increase heat near part to improve cure time.
DURATEC CLEAR
HI-GLOSS ADDITIVE
TROUBLESHOOTING | PRODUCT #904-001
Problem Cause Solution
Possible incompatibility between
additive and gelcoat.
Check both products separately for cure;
if ok, the products are not compatible.
High humidity.
Apply heat or spray in controlled humidity environment.1:1 Blend with gelcoat
fails to cure
Cool temperatures.
Fisheyes
Spray in controlled temperature environment.
Possible incompatability between additive and gelcoat.
Air contaminiation. (The lower viscosity of the additive/gel coat blend increases the susceptibility to fsheyes).
Check water and oil fltration in the air line.
Check both products separately for cure; if ok, the proucts are not compatible.
Improper catalyst used.
Ensure using full strength catalyst at the recommended 2% ratio.
by | Sep 27, 2025
PRODUCT PROPERTIES
All time calculations are based on temperatures of 77 F, 25 C
Lab tested with Norox 925 MEKP
Viscosity, #2 spindle, RVF, 20 RPM 500-800 cps
Thixotropic Index 3 minimum
Gel time @ 2% MEKP 14-18 minutes
Weight per gallon 8.8 lbs/gal
Coverage per gallon, 20 mil thickness 80 sq. feet
KEY USES
Composite plugs and
patterns
Wood surfaces
Mold resurfacing (not
exceeding 180 F)
Applications where air-
cured chemistry and thin
film cure is d
esired.
The Duratec Pattern Surfacing Coating is a self- leveling, air cured polyester
coating. The rapid complete cure will provide a hard glossy surface for patterns
and molds. This exceptional product is easy to sand and polish, achieving a final
gloss over 90 percent. The Pattern Surfacing Coating will not dull during the
mold making process, thereby providing a superior surface over tooling gelcoat.
FEATURES
AIR CURE
Provides a complete cure, even at
10 mils, 250 microns.
RESISTS FISHEYES
Unique additives reduce the risk
of fish eyes and pinholes during
the spray application.
SUPERIOR FINISH
Porosity free coating produces
glossy patterns that retain 98% of
their initial gloss after mold
making process.
LABOR SAVINGS
Smooth surface minimizes
sanding. Patterns can be finished
the day after the pattern coating is
applied. Mold prep is also
abbreviated due to high gloss
transfer.
DURATEC BLACK PATTERN
SURFACING COATING
PRODUCT # 902-046
S
AFETY & HANDLING
Duratec Patter n Surfacing
Coating is extremely fla mmable. Do n ot apply n ear
sparks, open fla mes or heat. Keep a rea ventilated. Do n ot smoke. Avoid c ontinuous
breathing
of vapor. Duratec Pattern Surfacing Coatin g contains ingredients which
could be harmful if mishandled. Contact with s kin and eyes
should b e avoided a nd
necessary p
rotective equipment an d clothin g should be wo rn. Individuals should
wash with soap and water before eating or drinking.
All containers should be
p
roperly labeled to prevent accidental ingestion o r improper disposal. Individuals
should
reseal any partly used material b ack in the container. Store un der cool, dry
conditions and away
from op en flames and high temperatures.
For more
detailed instructions on storage, please see the MSDS sheet.
L
iability/warranty statement: Our p roducts are intended for sale to industrial and commercial customers. We request that
customers inspect
and test our products before use and satisfy themselves as to contents and suitability. All claim requests
mu
st be made in writing and are subject to review, including storage temperature verification and retain evaluations. The
exclusive remedy
for all proven claims is replacement of our materials. In no event shall we be liable for special, incidental or
consequential damages, including dama
ges caused in transit (exworks terms). Nothing herein shall constitute a warranty,
expressed or implied
, including any warranty of merchantability or fitness, nor is protection from any law or patent to be
inferred. All pat
ent and trademark rights are reserved.
DESCRIPTION
909-546-1160
hawkeyesales@hawkeyeind.com
PO BOX 415,
BLOOMINGTON, CA 92316
WWW.HAWKEYEIND.COM
COLOR OPTIONS
Green (906-046)
Orange (908-046)
White (914
-046)
May require a minimum
order.
REVISED FEBRUARY 2023
DURATEC BLACK PATTERN
SURFACING COATING
APPLICATION GUIDE | PRODUCT #902-046
The following use instructions are broad to address multiple applications. We recommend testing for product
compatability with your process. Please contact our Tech Team at (909) 546-1160 with any questions.
PLEASE NOTE
WWW.HAWKEYEIND.COM 909-546-1160 HAWKEYESALES@HAWK
EYEIND.COM PO BOX 415, BLOOMINGTON, CA 92316
Liability/warranty statement: Our products are intended for sale to industrial and commercial customers. We request that customers inspect and test our products before use and satisfy
themselves as to contents and suitability. All claim requests must be made in writing and are subject to review, including storage temperature verification and retain evaluations. The
exclusive remedy for all proven claims is replacement of our materials. In no event shall we be liable for special, incidental or consequential damages, including damages caused in transit
(exworks terms). Nothing herein shall constitute a warranty, expressed or implied, including any warranty of merchantability or fitness, nor is protection from any law or patent to be
inferred. All patent and trademark rights are reserved.www.hawkeyeind.com
Prepare & Catalyze
Temperature should be at least 64 F for both the product and the part.
Mix with either a paint shaker or a drill-mounted mixer. A paint stir stick will not be enough for a proper mix.
For pattern or part
preparation, sand with 220 grit. Wipe down with a rag wetted with acetone. Do not use a
tack rag, as many tack rags will transfer materials to the surface. Seek a dust-free area around the pattern to
reduce contamination while the Duratec is liquid.
Catalyze the Duratec at 2.0 % by weight with a full strength MEKP, like Norox 925. Mix only an amount that can
be sprayed in 15 minutes. Mix well.
Additional solvent is not needed for most spray guns. If solvent is required, Duratec Reducer 39UCE-3 is the best
choice. MEK solvent is a good second choice. Discuss other options with our Technical Team prior to use.
If extended gel time is needed, check out Duratec Gel Time Extender.
Apply
Pattern Surfacing Coating should be applied by spraying. We recommend HVLP air-assisted spray guns.
A 1.8 mm tip is recommended. Use 34-40 psi air pressure (at the gun). Adjust the needle and fan to provide
the proper spray. Use the lowest pressures possible to minimize orange peel.
The first coat should be a light dust coat. The dust coating does not completely cover the surface. Wait at least
two minutes, and apply another light coat. Continue to make build passes of 4-5 mils, with two minute
intervals, until at least 20 mils of product is on the surface.
Apply build coats before the previous coat has tacked-off. The coating should be wet enough to transfer to a
fingertip. If the previous coat has cured enough that it will not transfer then allow for full cure and sand before
continuing.
Allow to cure fully. Sand and wait at least eight hours before polishing.
BLACK PATTERN
SURFACING COATING
TROUBLESHOOTING | PRODUCT #902-046
Problem Cause Solution
Alligatoring
Not enough catalyst used.
Substrate/primer incompatibility or
chemical reaction.
Check for proper catalyst levels.
Expose surface to higher temperature
before spraying when ambient temp
is below 64 F, 18 C.
Product sprayed on cold surface.
Check compatibility of surface of product.
Cracking Product sprayed too thickly, too fast.
Increase the number of passes,
adding dwell time between coats.
Dimples (Craters)
Film build up too rapid, solvent
trapped in product.
Increase the number of passes to achieve
desired thickness. Allow for ash o
between passes.
Fisheyes
Substrate contaminated.
Do not use a tack rag . Ensure rag does
not leave contaminant on surface.
Spray in a clean area to minimize airborne
dust, water, waxes, and/or silicones.
Spray with dry fltered air.
Contamination in the air.
Contamination in the line.
Orange Peel
Spray equipment set up incorrectly.
Spray pressure incorrect.
Pot pressure incorrect.
Follow the instructions for equipment
set up.
Set pressure at 34-40 psi.
Set pressure at 10-12 psi.
Pattern surface
sticks to mold
upon release
Pinholes
Porosity
Improper release preparation.
Follow manufacturer s instructions
when applying release materials.
Primer not fully cured before
compounding and polishing.
Excess gel time for tooling gel coat.
Substrate porosity.
Fill porous areas with product using
squeegee, brush or roller before spraying.
Follow instructions in the application
guide for pattern surfacing.
Follow manufacturer s recs for gel time
Acetone used as thinner.
Spray pressure too high.
Spray orifce too small.
Reduce pressure to 34-40 psi.
Use larger orifce.
Use slower solvent such as MEK or
Duratec Reducer
See the Liability and Warranty Statement on Page 1
by | Sep 27, 2025
Gel Time
Sample b ased on a 100g m ass
catalyzed at 2 % with MEKP
10-14 minutes
Weight per gallon 8.28 lbs/gal
Viscosity
As measured on a Brookfield
Viscometer Model RVF, Spindle #2
at 20 rpm
80 cps
Our Duratec Crystal Clear Sealer is a low viscosity, rapid
curing sealer that penetrates deeply allowing a solid anchor for
lacquers, urethanes, polyesters, vinyl esters, and most epoxies
to a variety of substrates.
FEATURES
EASY TO APPLY
Spray, r oll, or brush on as your
application s ees fit.
RAPID C URING
Surfaces are ready for topcoats in
one to two hours – some even
fas
ter with no need to wait!
DEEP PENETRATION
Low v
iscosity allows sealer to
penetrate surfaces for a more
c
omplete seal.
HIGH COMPATIBILITY
Versatile t o work with your
substrate and your choice in
topcoat lacquers
, urethanes,
polyesters, viny
l esters, a nd most
epoxies.
DURATEC CRYSTAL
CLEAR SEALER
PRODUCT # 823
SAFETY & HANDLING
Duratec Crystal Clear Sealer is extremely flammable. Do not apply near sparks,
open flames or heat. Keep area ventilated. Do not smoke. Avoid continuous
breathing of vapor. Duratec Crystal Clear Sealer contains ingredients which could
be harmful if mishandled. Contact with skin and eyes should be avoided and
necessary protective equipment and clothing should be worn. Individuals should
wash with soap and water before eating or drinking. All containers should be
properly labeled to prevent accidental ingestion or improper disposal. Individuals
should reseal any partly used material back in the container. Store under cool, dry
conditions and away from open flames and high temperatures.
For more detailed instructions on storage, please see the MSDS sheet.
DESCRIPTION
909-546-1160
hawkeyesales@hawkeyeind.com
PO BOX 415,
BLOOMINGTON, CA 92316
WWW.DURATEC1.COM
SAVE TIME
AND ADD
QUALITY TO
YOUR
SURFACE
PROFILE!
VINYL ESTER OPTION
If your process requires a
higher HDT consider our
1800 Vinyl Ester Sealer.
PRODUCT PROPERTIES
All time calculations are based on temperatures of 77 F, 25 C
Lab tested with Norox 925 MEKP
DURATEC CRY STAL
CLEAR SEALER
APPLIC ATION GU
IDE | PR O DUC T #823
Prepare
T
emperature should be at least 64 F. Low temperatures extend cure time.
Ensure the surface is clean and free of both chemical and environmental contaminants. If needed,
slightly sand the surface with 120-220 grit and then wipe off surface with a clean (not tack) rag.
Thoroughly stir the Duratec Crystal Clear Sealer in the can prior to catalyzing.
Catalyze Crystal Clear Sealer with a full strength MEKP, like Norox 925. Catalyst ratio is 2% by weight.
Due to the rapid gel time, mix only the amount that can be applied within 15-18 minutes.
NOTE: Higher temperatures yield a shorter pot life and gel time, while lower temperatures yield a
longer pot life and gel time.
Apply Sealer
Roll, brush, or spray the sealer on. If spraying, apply using air-assisted or airless spray at lowest
practical pressure. Wipe away any excess using a clean white cloth or paper towel. Do not use tack
rag.
Topcoating (Urethane, Polyester, Vinyl Esters)
In general, sealer will be ready to topcoat within an hour or two, but may be ready faster depending
on amount of sealer used and ambient temperature.
Sanding the sealer prior to
topcoating is not necessary if the time between sealing and topcoating is
less than eight hours. If more than 8 hours have passed, we suggest sanding with 180-200 to provide
mechanical tooth for the bond.
Topcoating (Epoxy)
Adhesion between the Duratec Crystal Clear Sealer and epoxy is dependent on a mechanical bond
with the epoxy rather than a chemical bond. We advocate for a cure time of at least eight hours.
Abrade the surface with sandpaper (180-220) prior to topcoating with epoxy.
The following use instructions are broad to address multiple applications. We recommend testing for product
compatability with your process. Please contact our Tech Team at (909) 546-1160 with any questions.
PLEASE NOTE
DURATEC CRYSTAL
CLEAR SEALER
TROUBLESHOOTING | PRODUCT #823
Problem Cause Solution
Extended dry
or cure rate
Substrate too dense or hard.
Add up to one quart of acetone per
gallon of sealer.
Failure to totally cureIncompatibility with substrate.
Replace 823 Sealer with Duratec
Polyurethane Sealer (5604-002 ).
Spotty cure
Oily substrate.
Replace 823 Sealer with Duratec Polyurethane Sealer (5604-002 ).
by | Sep 27, 2025
A Quality Product from Hawkeye Industries, Inc.
Duratec
Polyester EZ Sanding Primer
An exceptionally easy-
to-sand primer, that can
be polished to a smooth,
porosity-free surface.
Uses: for surfacing patterns for
composite molds, and where an
easy sanding, high build primer
is required.. Apply over tooling
board, MDF, brick, concrete,
plaster and clay.
Features:
Builds rapidly and provides a
surface that sands quickly.
Use less sandpaper
Reduce sanding labor
Easy to spray from HVLP guns.
Low porosity, fine smooth
surface.
.Start sanding with a fine grit,
reduce dust and film loss.
Build up to 30 mils.
Adhesion to most epoxies. Heat distortion temperature of 83 C, 180 F
Not recommended for use on CNC patterns over a low (less than 120 F) HDT tooling putty.
Use Instructions – Page 2
714-061 White
Limited/ warranty statement: Our products are intended for sale to industrial and commercial customers. We request that customers inspect and test our
products before use and satisfy themselves as to contents and suitability. Nothing herein shall constitute a warranty, expressed or implied, including any
warranty of merchantability or fitness, nor is protection from any law or patent to be inferred. All patent rights are reserved. The exclusive remedy for all
proven claims is replacement of our materials and in no event shall we be liable for special, incidental or consequential damages.
P. O. Box 415, Bloomington, CA 92316
(USA) 800-977-0060 (Outside USA) 909-546-1160 Fax 909-546-1161
Email: hawkeyesales@hawkeyeind.com www.duratec1.com
714-061 White
Duratec
Polyester EZ Sanding Primer
Product Properties: All time calculations are based on temperatures of 77 F, 25 C
As measured on a Brookfield Viscometer Model RVF, Spindle #2 at 20 rpm……………………………………2900 cps +/- 150 cps
Thixotropic……………………………………………………………………………………………………………………………………………………….6.5
Gel Time: Sample based on a 100 g mass catalyzed at 2 percent with mekP…………………………………………22 min +/- 2 min
Weight per Gallon…………………………………………………………………………………………………………………………..11.8 lb., 5.36 kg
Coverage per Gallon:
10 mil thickness (wet-dry) ……………………………………………………………………………………………………………………….110-115 ft
2
250 micron thickness (wet-dry) ……………………………………………………………………………………………………………10.2-10.7 m
2
Revised 06-23-16
Limited/ warranty statement: Our products are intended for sale to industrial and commercial customers. We request that customers inspect and test our
products before use and satisfy themselves as to contents and suitability. Nothing herein shall constitute a warranty, expressed or implied, including any
warranty of merchantability or fitness, nor is protection from any law or patent to be inferred. All patent rights are reserved. The exclusive remedy for all
proven claims is replacement of our materials and in no event shall we be liable for special, incidental or consequential damages.
P. O. Box 415, Bloomington, CA 92316
(USA) 800-977-0060 (Outside USA) 909-546-1160 Fax 909-546-1161
Email: hawkeyesales@hawkeyeind.com www.duratec1.com
Data Sheet
Continued
Page: 2
