Scotch® High-temperature Masking Tape 214 has an adhesive formulation which makes it one of the few tapes that can be used on copper, silver and other metals. Scotch® High-Temperature Masking Tape 214 is highly cured rubber adhesive for excellent high-temperature holding and adhesive transfer resistance to minimize edge lifting and reduce rework and labour. It features specially treated crepe paper backing that is sliver resistant, conformable, easy to tear, and solvent and moisture resistant. It is designed for indoor use only as it should not be subjected to outdoor exposure. It is ideal for use on aluminum anodized surfaces.