The Protective Coating fast curing, strong and flexible cold weld epoxy grey formulation is used to bond metal, rubber, fiberglass and glass in automotive applications. It sets in 8 minutes and the full cure time is 12 to 24 hours (at 75 Fahrenheit degrees). It also resists water. This product can be applied using a mixing nozzle or a mixing stick. The surface needs to be flat, clean and free of dirt, oil, rust before application. Be careful not to subject cured epoxy to heat over 300 Fahrenheit degrees. It comes in a 1 oz. format.