Pro Flex® RV Flexible Sealant is specifically designed for the recreational vehicle industry. It can be exposed to adverse weather conditions right after application. Pro Flex® RV Sealant has excellent expansion and contraction properties to withstand the joint movement and temperature changes associated with recreational vehicles. It bonds to many recreational vehicle materials, even damp, slightly oily, or frozen surfaces. For use on: Aluminum, glass, coated steel (Kynar 500® based finishes), steel, wood, fiberglass, and vinyl. Do not use for potable water applications.