JB Weld 8297 High Heat Epoxy Putty Stick

J-B Weld’s High Heat Epoxy Putty is able to withstand continuous heat of up to 450 degrees Fahrenheit, and intermittent heat up to 500 degrees Fahrenheit. Features 800 PSI strength at room temperature and 600 PSI strength at 400 degrees Fahrenheit. Perfect for tail pipes, mufflers, machinery, engine blocks, and exhaust manifolds. This epoxy putty is 3 times stronger at high temperatures than conventional epoxy putties. Sets in 1 hour, cures in 8 hours, and dries a machine grey color.