Bertech Double Sided 2 Mil Polyimide Tapes with Double Liner are made of 2 mil thick polyimide film with 1.5 mil thick silicone adhesive on both sides. These tapes offer an excellent performance in electrical and thermal insulation and have high dielectric strength. These tapes offer outstanding thermal endurance with excellent puncture and tear resistance. Double Sided Polyimide Tapes are packaged on a 3 in. core and are 36 yards long. Custom sizes are available upon request. RoHS Compliant.