Amtec Protecta is a dual purpose, heat resistant material for insulating and positioning parts for welding. It can protect against heat, up to 3000'F and can be used as a jiggling fixture to help position parts that are being welded or brazed. Protecta maintains its shape when heated, and when it dries out from excessive heat, you can reconstitute it with water. The dough like consistency makes it easy to mold around intricate parts and it will adhere to most surfaces. It will not distort or shrink when heated.
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