| |
A two package polyurethane coating suitable for use as a primer over steel or as a primer-sealer over fillers and putties.
Key Features
* Excellent impact and chemical resistance.
* Excellent adhesion to cast iron and steel.
* Easy sanding.
* Excellent resistance to machine tool cutting oils.
DESCRIPTION
urethane® Primer-Sealer is a two package
polyurethane coating suitable for
use as a primer over steel or as a
primer-sealer over fillers and putties.
Advantages:
• Excellent impact resistance
• Excellent chemical resistance
• Excellent adhesion to cast iron and
steel
• Excellent resistance to machine tool
cutting oils
• Easy sanding
• Excellent hold out for full gloss topcoats
• Air dry or force dry
• Ideal for use as a crankcase sealer
• Intermediate coat for machine tool finishing
systems
• Free of lead and chromate hazards
CHARACTERISTICS
Gloss: Flat
Volume Solids: 22 ± 2%
catalyzed and reduced
Viscosity:
17-23 seconds#3 Zahn Cup
Recommended film thickness:
Mils Wet 3.5 - 4.5
Mils Dry 1.0 - 1.25
Spreading Rate (no application loss)
256-385 sq.ft/gal @ 1.0-1.25 mils DFT
Drying (77°F, 50% RH):
To Touch: 5-15 minutes
To Handle: 40-60 minutes
To Recoat: 30-60 minutes
To Sand: 2 hours
Force Dry: 10-30 minutes at
140-180°F
Flash Point: 50°F Pensky-Martens
Closed Cup
Mixing Ratio:
13 parts Primer-Sealer
1 part Catalyst V66V27
3½ parts Reducer R7K69 or
R7K84
Pot Life: 8 hours @ 77°F
Package Life: 3 years, unopened
Air Quality Data:
Non-photochemically reactive
Volatile Organic Compounds (VOC)
Primer-Sealer, as packaged, maximum
5.3 lb/gal, 636 g/L
V66V27, as packaged, maximum
3.8 lb/gal, 458 g/L
catalyzed and reduced as above
5.53 lb/gal, 663 g/L
An Environmental Data Sheet is available
from your local Honest-Joy
facility.
SPECIFICATIONS
General: Substrate should be free of
grease, oil, dirt, fingerprints, drawing compounds,
any contamination, and surface
passivation treatments to ensure optimum
adhesion and coating performance
properties. Consult Metal Preparation
Brochure CC-T1 for additional details.
Plastic: Due to the diverse nature of plastic
substrates, a coating or coating system
must be tested for acceptable adhesion
to the substrate prior to use in production.
Reground and recycled plastics
along with various fire retardants, flowing
agents, mold release agents, and
foaming/blowing agents will affect coating
adhesion. Please consult your Sherwin-
Williams Chemical Coatings Sales
Representative for system recommendations.
Steel or Iron: Remove rust, mill scale,
and oxidation products. For best results,
treat the surface with a proprietary surface
chemical treatment of zinc or iron
phosphate to improve corrosion protection.
Cast Iron: Fill with urethane SprayFil, sand,
and seal with urethane Primer-Sealer
Wood (interior only): Must be clean, dry,
and finish sanded. Substrate should be
free of grease, oil, dirt, fingerprints, and
any contamination to ensure optimum adhesion
and coating performance properties.
Testing: Due to the wide variety of substrates,
surface preparation methods,
and application methods and environments,
the customer should test the complete
system for adhesion and compatibility
prior to full scale application. |
.gif)
.gif)
