Bertech 5 Mil High-Temperature Polyimide Tapes are made of 5 mil thick polyimide film with 1.5 mil thick silicone adhesive. These tapes are reliable and durable with a unique combination of electrical, thermal, chemical, and mechanical properties that withstand extreme temperatures, vibration, and other demanding environments. High Temperature Masking Tapes are packaged on a 3 in. core and are 36 yards long. Custom sizes are available upon request. RoHS Compliant.