RUST MORT is an acidic compound that converts existing rust to an insoluble black coating prior to applying body filler, primer or top coat.
RUST MORT Rust Mort, 1 pt Net Content, Bottle Container, Liquid Form, Green, Composition: Phosphoric Acid and Propan-2-Ol, Density: 1.1914 g/cc, 98.1 g/L VOC