POR-15 is a high performance coating designed for application directly on rusted or seasoned metal surfaces. POR-15 is non-porous and seals and protects many surfaces from water, chemicals, salt, and other corrosive contaminants. POR-15 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-15s curing process. Most paints dry through evaporation, but POR-15 dries faster when moisture is present. It has the opposite chemistry of ordinary paints. Now add to that POR-15s incredible hardness, toughness, and flexibility and you have a coating that is practically indestructible. POR-15 is great for auto restoration, and protecting valuable equipment against rust and corrosion. You'll be amazed at the toughness!