Check the listing for details. POR-15 Rust Preventive Coating Gloss Black Quart Stop Rust Corrosion Permanently. Condition: New. Listed at 63.99 USD. 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-15®'s 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-15®'s incredible hardness, toughness, and flexibility and you have a coating that is practically indestructible.