Supermarine Etching Primer (SM-664D) is our best selling and most popular marine primer because of its versatility, outstanding sandability and protective qualities over a wide variety of substrates. It creates a virtually unbreakable chemical bond to whatever it has been applied to which allows it to be used almost anywhere and most any application! Etching Primer should be the primer of choice on wood, fiberglass and aluminum applications. Etching Primer meets government specification number TT-P-664D so you know you are getting the best.
A hi-performance Phenolic Modified Alkyd Etching Primer specially formulated for use with hard to prime surfaces such as aluminum and fiberglass. Also acceptable for use on metal or iron surfaces. Etching Primer is a lacquer proof, fast drying, high solid, low VOC marine primer coating that inhibits rust, is resistant to salt spray and penetrates cracks around light rust and mill scale. It protects corners and edges and resists exposure to the damaging effects of weather. Acceptable for use wood, fiberglass and aluminum boats, infrastructure and equipment. A premium-grade, high solid marine coating 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. Finish coats such as nitrocellulose lacquers may be applied directly over it without the worry of lifting or wrinkling. Available in quart, gallon or five gallon cans. Color: White or Red Oxide. Finish is low sheen.
·Hard to find government spec formula.
·Adheres to virtually any surface.
·Builds, fills and sands beautifully.
·Eliminates the need of mixing multiple components together.
·Provides excellent resistance to salt, chemicals, water and vapors.
·Promotes adhesion on hard to coat surfaces.
·Makes coating aluminum, stainless or galvanized surfaces possible.
Stats: Dries to the touch in 30 minutes, tack free in 1 hour, recoatable in 2 hours, dries hard in 4 hours. Recommend waiting until 4 hours have passed before recoating with primer or paint. Coverage is approximately 250 square feet per gallon, depending on the texture and porosity of the surface. Apply by brush, roller or spray.
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. Where rust is evident use SM-5679 Phos-Pro Rust Converting Cleane. All surfaces must be thoroughly clean and dry before the application of any marine primer, boat paint or antifouling bottom paint.
Application: Recommend applying a minimum of 2 coats. Etching Primer should be allowed to dry a minimum of two to three hours before recoating with subsequent primers or marine finish coatings. It should be applied to a dry film thickness between 0.3-0.5 mil. For non-marine equipment or on iron or steel surfaces it should be applied to 0.6-0.8 mil dry film. NOTE: This marine primer is designed for application over surface-treated metal or pretreatment coatings (See SM-117 Pre-Treatment Wash Primer). If used for dip or flow-coat application, the product suitability should be determined by the user.
Thin & clean up: SM-605 Synthetic Thinner. Clean spills and tools immediately with SM-605 Thinner.
Shipping: Ships within 2-4 days of order.