3/4 inch x 66' White (1 Pack) 3M 69 electrical tape. The thermosetting adhesive provides increased bond once applied in areas of high ambient temperatures. Heat-stable insulation for furnace and oven controls, motor leads and switches. Operating temperature range 32 - 392 Degrees F. Woven glass cloth tape with a silicone, pressure-sensitive adhesive. Edge-tear resistant, conformable, high temperature, flame resistant tape. Insulate and splice wires up to 3, 000V.