Hi-Temp Lab Metal 24 oz One-part metal putty able to withstand temperatures to 1000F Can be machined, ground, filed, and sanded. Repairs items prior to lengthy or repeated powder coating processes. Ideal for repairs in powder coating, metalworking, welding, fabricating, heating, construction, die casting, and mold refinishing Used to repair fabricated parts, core boxes, boilers, mufflers, exhaust systems, molds, wood and coal burning stoves, grills, engines, radiators, and industrial ovens.