Rust-Oleum Stops Rust, Rust Reformer is for designed to convert rust into a non-rusting surface, no sanding required. For use on rusted metal only, this corrosion-resistant product is compatible with most solvent and oil-based paints. Durable, corrosion-resistant formula is compatible with most solvent and oil-based paintsIdeal on interior / exterior rusted metal surfacesOil based product, Apply several light coats a few minutes apart to prevent running and saggingDries to the touch in 20-40 minutes and can be recoated with an oil base paint after 3 hours or a lacquer after 3 days.