Viper Coil Coating is a permanent epoxy resin that we supply to factory OEM’S and coil manufacturers. It is the toughest and longest lasting coating you will ever use. It bonds to all metal surfaces and withstands temperatures to 400° F (205° C). The aerosol injector provides a flat spray pattern for reaching deep into the coil body. In the field, simply apply a single coat to the front and back of the coil. There will be no loss of heat transfer when used as directed.