por-15 45004 rust preventative coating gloss black kit w/metal prep & degreaser por-15 por-15 rust preventive coating is a high performance coating designed for application directly on rusted or seasoned metal surfaces and will stop rust permanently. por-15 rust preventive coating is non-porous and seals and protects many surfaces from water, chemicals, salt, and other corrosive contaminants and is able to be painted over rust. por-15 rust preventive coating is an effective anti-corrosive and rust preventive coating that offers superior chemical resistance due to its dense, cross-linked molecular composition and non-porous attributes. applications: automotive: chassis, doors, floors, trunk areas, suspension, engine, and fuel tanks industrial: heavy equipment, truck components, trailors, fuel storage, rebar, steel forms, concrete, storm gates, transformers, waste water management marine: decks, bilges, hulls, steam pipes, chain lockers, masts home: hvac, pipes, beams, home appliances warning: this product can expose you to chemicals which is [are] known to the state of california to cause cancer and birth defects or other reproductive harm.