Products / Western Colloid #900R MTL+ Rust Primer

A water-based acrylic emulsion, rust-inhibiting primer for metal surfaces, formulated with a polymer that the technical bulletin says reacts with lightly rusted steel to form a bond and provide anticorrosion protection. The maker says it can be over-coated with all Western Colloid topcoats and coatings. It cures yellow and is applied by roller, brush or spray at 1 gallon per 200 sq. ft. after heavy rust scale is removed, at a minimum of 50 F, and is sold in 5-gallon pails.