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Supermarine Zinc Chromate Primer
(SM-1184) is a rust-inhibiting Red Oxide Primer that is easy to
spray and fast-setting. It is based on a zinc chromate-ferric
oxide anti-corrosion marine coating system. This highly
effective zinc primer binds rust to metal sealing out rust
causing air and moisture. It is intended for use as a protective
metal primer for new or rusted surfaces. Designed primarily as a
corrosion-inhibiting zinc primer for use on aluminum vessels,
equipment, machinery, ferrous and nonferrous metal surfaces
before a top coating system is applied.
It is a premium-grade, high solid marine primer that not only
acts as an effective rust preventative on steel and iron
substrates but should be viewed as an integral component of any
corrosion resistant coating system. It is zinc rich and contains
a balanced composition of special pigments and phenolic modified
resin providing good rust-inhibitive properties and blister
resistance for better adhesion and metal protection. Color: Red
Oxide. Product type: Zinc Chromate Rust-Inhibitive Primer.
Available in one gallon or five gallon cans.
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Hard to find government spec formula.
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Zinc chromate ferric oxide anti-corrosion formula.
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Binds rust to metal sealing out air and moisture.
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Promotes adhesion on hard to coat surfaces.
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Creates a firm base for virtually any top coating system.
Stats:
Physical characteristics: Viscosity: 20-25 sec. #2 Zahn. Dry to
the touch: 5-10 minutes, tack free: 20 minutes, time to recoat:
30 minutes, dry hard: 30 minutes. Weight Solids: 58-60%.
Practical coverage is 300-350 square feet per gallon @
approximately 2.0 mils dry.
Recommended preparation:
For best results remove old marine coating, loose scale, grease,
oil and contaminates. Sand, grind, bead blast or power-wash
prior to the application of any cleaner or primer.
Steel:
SM-5679 Phos-Pro Rust
Converting Cleaner, etch concrete
with
SM-695
Etching Cleaner
All surfaces must be thoroughly clean and dry before the
application of any marine primer, boat paint or antifouling
bottom paint.
Application:
This product is at a spray viscosity designed for airless use:
The zinc primer should be allowed to dry a minimum of 2 hours
before recoating with subsequent marine primers or marine
paints. It should be applied to a dry film thickness between
0.3-0.4 mil. For non-marine equipment, or on iron or steel
surfaces it should be applied to 0.6-0.8 mil dry film. It is
satisfactory for application in a wide range of temperatures or
humidity conditions. NOTE: This zinc primer is designed for
spray application over surface-treated metal or pretreatment
marine primer (See
SM-117 Pre-Treatment Wash Primer). If used for dip or flow-coat
application, the product suitability should be determined by the
user. Stir thoroughly before use. Brush, roll, or spray.
Thin & clean up:
Use only with factory recommended thinner. It should not be
thinned unless absolutely necessary. Thin if necessary withSM-605
Synthetic Thinnerr. Tools and
equipment may be cleaned with
SM-605
Synthetic Thinner
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