These are tacky adhesive and sealing tapes adhere to all metals, glass, plastics, concrete and porous surfaces. Flexible from -400 F to 1800 F. Black tape is non-trimmable. Can be used under all temperature Conditions. Excellent adhesion to metal, wood, glass, concrete, and most other materials. Butyl rubber tapes can easily withstand the high compressive loads. Butyl rubber insulation is widely used for insulation purpose in the air conditioners as well as refrigerators.