POR-15® rust preventive coating is a high-performance coating designed to paint directly on prepped rusted or seasoned metal surfaces to 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. This anti-rust coating paint 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. The secret lies in POR-15® rust preventive coating's curing process. Most paints dry through evaporation, but POR-15® rust preventive coating dries faster when moisture is present. It has the opposite chemistry of ordinary paints. Now add to that POR-15® rust preventive coating incredible hardness, toughness and flexibility and you have a coating that is practically indestructible. POR-15® rust preventive coating is a permanent rust repair great for auto frame and chassis restoration, protecting valuable equipment against rust and corrosion. Use POR-15® cleaner degreaser and POR-15® metal prep to properly get your surface ready for the POR-15® rust preventive coating. You'll be amazed at the toughness.