Supermarine Pre-Treatment Wash Primer (SM-117) is a Chromate Polyvinyl Butyral Two-Component Etching Wash Primer used on hard to adhere to aluminum, galvanized and stainless steel surfaces. A pre-treatment primer intended to be used in combination with an intermediate primer. Not intended as a permanent protective primer in itself although some protection is afforded for short periods of time. To ensure best results the pre-treatment should be coated with a primer and finish with paint as soon as possible. For best adhesion results, wash primer should be applied by spray no more than a fog coat, however, it may be applied by means of a light brush coat at a dry film thickness of .00076 cm. to .00127 cm. This product is semi-transparent, it is not necessary to hide the substrate with the primer. The major purpose of this primer is to provide an adhesion surface for subsequent primers and protective marine paint. Not required for use on wood, fiberglass or steel. Meets Federal Specification number MIL-P-15328.
·Hard to find government spec formula.
·Formula contains protective zinc chromates.
·Promotes adhesion on hard to coat surfaces.
·Makes coating aluminum, stainless or galvanized surfaces possible.
Stats: Color: Green. Covers 400-500 square feet per gallon. Dry to the touch in 5-10 minutes, tack free in 10 minutes, time to recoat 15-30 minutes. Pot life: 2-3 hours. Catalyst Mixing Rate: 4: 1 Part A : B.
Thin & clean up: Use only with factory recommended thinner, Thin with Isopropyl Alcohol. Clean tools and equipment with alcohol, SM-605 Synthetic Thinner.
Shipping: Ships within 2-4 days of order.
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