Insulating Electrical Tape Tape Backing Material Silicone 1 in 30 ft 12 mil Gray Voltage Rating Not Rated Tape Adhesive Material Silicone 3M(TM) Scotch(R) 70 Minimum Tape Performance Temperature 32 Degrees F Maximum Tape Performance Temperature 356 Degrees F Product Form Continuous Roll Tape Adhesive Format Self-Fusing