The Scotch® Super 33+™ Professional Grade Vinyl Electrical Tape is a 7 mil (0.18 mm) thick, premium-grade, all-weather, vinyl electrical tape that is designed to provide electrical insulation for cable splices up to 600V. The flame-retardant tape withstands a temperature range of 0°F to 221°F (-18°C to 105°C).Scotch Super 33+ Professional Grade Vinyl Electrical Tape is a black, 7 mil (0.18 mm) tape, on a 1 in (25.4 mm) core, combines the flexibility of a PVC backing with excellent electrical insulating properties to provide primary electrical insulation for splices up to 600V. Abrasion, corrosion, and UV resistant, it makes an excellent protective jacketing for high voltage cables and wire harnessing. UL Listed and CSA Certified, it resists alkalis and acids, and is flame retardant. Excellent all weather performance in cold to 0F ( -17C) or hot to 220F (104.4C).