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
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
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
As measured on a Brookfield
Viscometer Model RVF, Spindle #5 at
2.5 rpm
2300-2600 cps
Thixotropic Index 6
Gel Time
Sample based on a 100g mass
catalyzed at 2% with MEKP
18-22 minutes
Weight per gallon 10.9 lbs
Coverage per Gallon
20 mil thickness
80 sq. feet
KEY USES
Composite plugs and
patterns
Priming wood products
Furniture
Architecture
High density foams
The ultimate high-gloss surface primer for wood, MDF, tooling board for
composite plugs, patterns and models. Unique air-cure technology for
fast cure even with thin coats. Easy to sand, polish to a gloss. Take a
mold directly off the Surface Primer or topcoat for the highest gloss.
FEATURES
LOW POROSITY
Provides a s
uper fine leveling and
filling sy
stem. Applied properly,
Surface Primer provides a
porosity-f ree surface without
pinholes or defects.
ADHESION TO EPOXIES
With heat distortion level of 200
F/93C the primer also adheres to
mos
t epoxies, including fiberglass,
wood, MDF, bric
k, concrete and
polyurethane foam.
RAPID BUILD UP
Up to 30 mils, wet on wet, on
composite plugs and master mold
surfaces. Save time and labor.
EASY SANDING
Saves time and labor. The primer
cures to a surface that polishes to
a glos
s.
DURATEC WHITE
SURFACE PRIMER
PRODUCT #7 14-002
SA
FETY & HAN DL I NG
Duratec Surface Primer is extremely flammable. Do not apply near sparks , open flames or heat.
Ke
ep area ventilated. D o not smoke. Avoid continuous breathing of vapor. Duratec Surface
Primer
contains ingredients which could be harmful if mishandled. Contact with skin and ey es
s
hould be avoided and necessary protectiv e equipment and clothing should be worn. Individuals
s
hould 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
us
ed 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 s
tatement: Our p
customers i
nspect 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 r
emedy 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 o
r implied, in
cluding 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 92 316
WWW.HAWKEYEIND.COM
COLOR OP TIONS
REVISED
JULY 2021
REVISED JULY 2021
REVISED
JULY 2021
Black
(702-003)
Li
ght Gr
(707- 082)
Grey (707-0 02)
REVISED MAY 2023
DURATEC WHITE
SURFACE PRIMER
APPLIC ATION GUIDE | PR ODUC
T #714-002
WWW.HAWKEYEIND.COM 909-546-1160 HAWKEYESALES@HAWKEYEIND.COM PO BOX 415, BLOOMINGTON, CA 92316 / L D E L O L W Z D U U D Q W V W D W H P H Q W 2 X U S U R G X F W V D U H L Q W H Q G H G I R U V D O H W R L Q G X V W U L D O D Q G F R P P H U F L D O F X V W R P H U V W H U H T X H V W W K D W F X V W R P H U V L Q V S H F W D Q G W H V W R X U S U R G X F W V E H I R U H X V H D Q G V D W L V I
W K H P V H O Y H V D V W R F R Q W H Q W V D Q G V X L W D E L O L W $ O O F O D L P U H T X H V W V P X V W E H P D G H L Q Z U L W L Q J D Q G D U H V X E M H F W W R U H Y L H Z L Q F O X G L Q J V W R U D J H W H P S H U D W X U H Y H U L I L F D W L R Q D Q G U H W D L Q H Y D O X D W L R Q V T K H
H [ F O X V L Y H U H P H G I R U D O O S U R Y H Q F O D L P V L V U H S O D F H P H Q W R I R X U P D W H U L D O V I Q Q R H Y H Q W V K D O O Z H E H O L D E O H I R U V S H F L D O L Q F L G H Q W D O R U F R Q V H T X H Q W L D O G D P D J H V L Q F O X G L Q J G D P D J H V F D X V H G L Q W U D Q V L W
H [ Z R U N V W H U P V 1 R W K L Q J K H U H L Q V K D O O F R Q V W L W X W H D Z D U U D Q W H [ S U H V V H G R U L P S O L H G L Q F O X G L Q J D Q Z D U U D Q W R I P H U F K D Q W D E L O L W R U I L W Q H V V Q R U L V S U R W H F W L R Q I U R P D Q O D Z R U S D W H Q W W R E H
L Q I H U U H G $ O O S D W H Q W D Q G W U D G H P D U N U L J K W V D U H U H V H U Y H G
Z Z Z. K D Z N H H L Q G. F R P
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
Mix
Mix thoroughly with a drill-mounted mixer or paint shaker. Hand stirring is not enough.
Duratec Surface Primer is designed to be applied when the ambient temperature and part
temperature are both above 64 F.
Catalyze
Catalyze with full strength MEKP catalyst at 2% by weight (approx. 20 cc per quart). Norox 925 is a
good choice.
Catalyze only what will be used in 10-15 minutes. Mix well.
Apply
Surface Primer is best applied by spray using an HVLP gun, or with a gelcoat application system.
Seek a fine spray, and use the lowest pressure that allows an even spray fan. (approximately 40 psi).
A 2.0-2.4
mm tip is recommended. If applying by brush or roller, please speak with our Technical
Support T
eam.
Apply at least 10 mils, building 4-5 mils at a time,
in a crosshatch pattern for even and complete
cure.
Allow time (2-3 min) between passes for out-gassing. Recoat before the primer has set up
and lost its tack. If the primer cures completely wait at least eight hours, sand, and recoat.
In-Mold Tip: If spraying in-mold, the first pass should be a light dust coat to allow proper surface
tension to form.
Additional solvent is not needed for most spray guns. If solvent is required, do not add a
cetone. Duratec
Reducer 39UCE is the best choice. Methyl Ethyl Ketone Solvent (MEK) will work for most users.
High quality urethane reducers are good choices. Lacquer Thinners are not recommended.
If extended gel time is needed, check out Duratec Gel
Time Extender.
Sand
Sand when the primer has cured. Start with the finest paper that will remove the surface profile. If
sprayed well, 220 or 320 grit paper is a good starting point.
Polish
Wait at least eight hours from the start of sanding before polishing or topcoating.
Aqua Buff 1000 and 2000 are good choices for compounding and polishing Duratec Surface Primer.
DURATEC WHITE
SURFACE PRIMER
TROUBLESH
OOTING | PRODUC T #714-002
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.
Primer sprayed on cold surface.
Check compatibility of surface of product.
Blisters
Substrate not cured, gassing
underneath primer.
Completely cure putties, pastes and
compounds before applying primer.
Cracking Primer spray too thickly, too fast.
Increase the number of passes, adding dwell time between coats.
Dimples (Craters)
Film build up too rapid, solvent trapped in primer.
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 35-50 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 35-50 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
PRODUCT PROPERTIES
All time calculations are based on temperatures of 77 F, 25
C
Lab tested with Norox 925 MEKP
Viscosity
As measured on a Brookfield
Viscometer Model RVF, Spindle #2 at
20 rpm
1900-2500 cps
Thixotropic Index 6.5
Gel Time
Sample based on a 100g mass
catalyzed at 2% with MEKP
22 minutes +/- 2 min
Weight per gallon 11.8 lbs
Coverage per Gallon
20 mil thickness
80 sq feet
KEY USES
Surfacing patterns for
composite molds
Tooling board
MDF
Brick and concrete
Plaster and clay
Polyester or vinyl ester
fiberglass
The Duratec EZ Sanding Primer is a favorite across the composites
industry, as it is versatile enough to be used in a multitude of
applications. This primer is an exceptionally easy-to-sand product that
can be sprayed to a high build to eliminate defects. Sand and polish for a
smooth, porosity-free surface.
FEATURES
RAPID BUILD
Up to 40 mils.
EASY APPLICATION
Easy to spray from HVLP guns.
Low porosity, fine smooth surface
COST SAVING
Uses less sandpaper and reduces
sanding labor by providing a
buildabl
e surface that sands
quickly.
ADHESION
To
most epoxies and substrates
other than metal.
HDT
Heat distortion temperature of
180 F (83 C)
DURATEC GREY EZ
SANDING PRIMER
PRODUCT #707-0 61
SAFETY & HANDLING
Duratec EZ Sanding Primer
is extremely flammable. Do not apply near sparks, open flames or
heat. Keep area ventilated. Do not smoke. Avoid continuous breathing of vapor. Durat
ec EZ
Sanding P rimer contains ingredients which could be harmfu
l if mishandled. Contact with skin
and eyes
should be avoided and necessary protective equipment and clothing should be worn.
Individuals should wash with
s oap and water before eating or drinking. All container s should be
properly labeled to prevent accidental ingestion or improper disposal. Individuals should reseal
any partl
y 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
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.HAWEKEYIND.COM
COLOR OPTIONS
Black (702-061)
White (714-061)
Grey (707-061)
REVISED MAY 2023
DURATEC GREY EZ
SANDING PRIMER
APPLICATION GUIDE | PRODUCT #707-061
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
Duratec products leave the factory mixed for optimal performance. If thinning is required, we
suggest the use of Duratec 39UCE Reducer. Duratec Reducer duplicates the solvents that the Primer
contains and will quickly reduce viscosity. MEK Thinner is a reasonable alternative. Add as little
thinner as possible.
Prepare
T
emperature should be at least 64 F for both the product and the part.
Duratec 707-061 contains functional
llers that will sink to the bottom of the container. Use either a
paint shaker or a drill-mounted mixer. A paint stir stick will not be enough to mix up.
We recommend HVLP air-assisted spray guns. A 2.5 mm tip or larger is ideal for Duratec EZ Sanding
Primer. Use 34-40 psi air pressure (at the gun). Adjust the needle and fan to provide the proper spray.
Catalyze
Catalyze the Duratec at 2.0 % by weight with a full strength MEKP, like Norox 925. Mix for one minute
(when using a cup gun). Only catalyze what can be sprayed in 12 minutes.
Apply
Apply 5-7 mils and immediately apply another 5-7 mils in the opposite direction for a crosshatch efect.
You should spray multiple passes of 5-7 mils, allowing a minimum of two minutes to out-gas between
coats. Up to 40 mils can be applied if the part requires aggressive post sanding.
Do not allow the EZ Sanding Primer to become tack-free between build coats. If the EZ Sanding Primer
becomes tack-free, allow it to cure completely, sand with 180-220 grit, and recoat.
WWW.HAWKEYEIND.COM 909-546-1160 HAWKEYESALES@HAWKEYEIND.COM PO BOX 415, BLOOMINGTON, CA 92316Liability 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 sub Mect 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
DURATEC GREY EZ
SANDING PRIMER
TROUBLESHOOTING | PRODUCT #707-061
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
is below 64 F, 18 C.
Primer sprayed on cold surface.
Check compatibility of surface of product.
Cracking Primer spray too thickly, too fast.
Increase the number of passes,
adding dwell time between coats.
Dimples (Craters)
Film build up too rapid, solvent
trapped in primer.
Increase the number of passes to achieve
desired thickness. Allow for ash o
between passes.
Orange Peel
Spray pressure incorrect.
Pot pressure incorrect.
Set pressure at 35-50 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 35-50 psi.
Use larger orifce.
Use slower solvent such as MEK or
Duratec Reducer
See the Liability and Warranty Statement on Page 1
