Precision Brand® Type 321 Tool Wrap provides reliable protection against scale and oxide buildup during heat treatment in atmospheric furnaces.

Made from soft annealed Type 321 stainless steel, it prevents decarburization and resists chromium carbide precipitation at high temperatures—up to 2000°F.

Designed for air-hardening tool steels, this cut-to-fit foil creates an airtight envelope around parts for a clean surface finish.

Easy to cut, fold, and crease-seal, it offers the benefits of a vacuum furnace at a fraction of the cost. Packaged in a convenient, reclosable carton for easy storage and handling.