• FIN Protectant is a specially formulated coating containing acrylic polymers and anti-corrosion agents designed to protect painted or unpainted metals from rust and corrosion. FIN Protectant seals and protects aluminum, copper, brass, bronze, chrome, galvanized metal, titanium, and stainless steel. It is ideally suited for use on air cooled condensers located in corrosive environments such as airports, adjacent to freeways, and salt air areas. Recommended for use with P902-0101 Condenser Cleaner.