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 min. 5
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 mils thickness
80 sq. feet
KEY USES
Composites
Metal & MDF
Brick & concrete
Various low-density
foam
s
Plaster & clay
A high-quality polyester sanding primer that provides outstanding filling
and leveling properties for many varied substrates. This product is an
excellent choice when you need a higher build than a surface primer, but
less of a gloss.
DURATEC GREY
SANDING PRIMER
P ROD UCT # 707-007
S A FE TY & H ANDL I NG
Duratec Sanding Prim er is extremely flammable. Do not apply near sparks, open flames or
h
eat. Keep area ventilated. Do not smoke. Avoid continuous breathing of vapor. Duratec
Sanding P rimer 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 s hould wash with soap and water before eating or drinking. All
c
ontainers should be properly labeled to prevent accidental ingestion or improper disposal.
I
ndividuals 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 s heet.
Liability/warranty s
tatement: O
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
FE ATURE S
LOW POROSITY
Provides a super fine leveling and
filling system.
Applied properly,
Sanding Primer provides a
porosity-fr ee surface
without
pinholes or defects.
ADHESION
TO EPOXIES
With heat distortion level of 200
F/93
C the primer also adheres to
most epoxies, including fiberglass,
wood, M
DF, brick, concrete and
polyurethane foam.
RAPID BUILD UP
Up to 40 mil (10 00 microns), wet
on wet, o
n 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 medium gloss.
COLOR OP TIONS
707-
Black (702-0 07
)
White (714-00
7)
007 IS DARK GREY
REVISED JULY 2021
REVISED JULY 2021
REVISED JULY 2021
REVISED FEBRUARY 2023
DURATEC GREY
SANDING PRIMER
APPLIC A
TI
ON GUIDE | PR ODUC T #707- 007
Mix
Mix thoroughly with a drill-mounted mixer or paint shaker. Hand stirring is not enough.
Duratec Sanding Primer is designed to be applied when the ambient temperature and
part temperature are both above 64 F.
WWW.HAWKEYEIND.COM 909-546-1160 HAWKEYESALES@HAWKEYEIND.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
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
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
Sanding 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 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, for even and complete cure. Recoat before the
primer has set up and lost its tack. If the primer cures completely wait at least eight hours, sand, and
recoat.
Additional solvent is not needed for most spray guns. If solvent is required, Duratec Reducer 39UCE-3 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 Sanding Primer
D
URATEC GREY
SA
NDING PRIMER
T
ROUBLESHOOTING | PRODUC T # 707-007
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