Absolute Coatings (POR15) Rust Preventive Six Pack, Gloss Black, 4 oz. part #:POR-45006  Single component permanent moisture cured urethane  Non-porous coating  Chemical resistant  Self-leveling when applied with a brush  Uses: automotive, marine, industrial, and home  Protects your investment  Completely waterproof  Abrasion chemical, stain, and impact resistant  Effectively adapts to the expansion and shrinkage of surface caused by temperature changes  Does not crack, chip, or peel from the surface substrate  Eliminates the need for a sacrificial zinc primer system  Heat resistant up to 450?F / 232?C