Bertech Black Polyimide Masking Tapes are made of 1 mil thick polyimide film with 1.5 mil thick silicone adhesive. They offer excellent thermal resistance and electrical insulating properties. These black polyimide tapes are used for protection of components in wave soldering, anodizing, powder coating, and 3D printing. They are also used in applications where high temperature masking is required. They have been used in applications at temperatures as low as -73°C (-99°F) and as high as 260°C (500°F). Black Polyimide tapes are packaged on a 3 inch core and are 36 yards long. RoHS and REACH Compliant.