Hand-kneadable epoxy putty is especially designed for repairs that involve high temperatures. 8-minute working time and cures in 1 hour. Performs at temperatures of 200 °C. F. (93 °C.) to 350 °C. F. (176 °C.). Waterproof. Can be used to repair heating pipes, radiators, grills, woodburning stoves, engine blocks, castings, ovens, lawn mowers, tractors, electrical connections, etc. 1 oz.