POR 15 45808 Gloss Black BlackCote - Top Coat Over POR-15 - Pint BLACKCOTE is a permanent gloss black coating developed for application over painted and unpainted surfaces. Apply over POR-15 Rust Preventive Paint for the toughest, most permanent protection against rust and corrosion ever developed. BLACKCOTE is non-porous and will not crack, chip, or peel when properly applied according to directions. BLACKCOTE is not sensitive to ultra-violet light and may be exposed to sunlight without damaging consequences. Paint Topcoate, Gloss Black, BlackCote, Pint