Epoxy-Fortified For Better Adhesion & Topcoat Compatibility Penetrates Deeper To Prevent Rust From Spreading Or Forming, Even In Hard-To-Reach Areas Cures Faster, & The Low-VOC Formula Is Acceptable In California 15-oz. Aerosol Covers About 10 sq. ft. As Seen On My Classic Car TV Show You thought it was good before...wait ?til you try this Rust Encapsulator! It seals and stops rust and corrosion from spreading, but it performs even better than our original formula. Tested against well-known brands, the Rust Encapsulator has proven to be superior in sunlight resistance, preventing rust creep, and overall durability.