JB Weld, 3 OZ, Extreme Heat Hi Temp Resistant Paste, Epoxy Putty Specifically Formulated To Bond & Repair Materials That Will Be Exposed To High Temperatures In Automotive & Industrial Maintenance Applications, Cures To A Tough Hard Bond With Little To No Shrinkage, Sets In 1 Hour At Room Temperature, After 8 Hours It Can Be Drilled, Tapped, Machined, Ground, Filed & Painted, Withstands Temperatures Up To 2,400 Degrees Fahrenheit, Files Cracks & Holes In Metal Surfaces.