Scotch® 33 Electrical Tape is a quality 0.178mm thick, general purpose PVC insulating tape. It has excellent resistance to abrasion, moisture, alkalis, acid, copper corrosion and varying weather conditions (including sunlight). It is a polyvinyl chloride (PVC) tape that has a high dielectric strength, is flame retardant and conformable, and provides excellent mechanical protection with minimal bulk. For indoor and outdoor insulation for all general wiring applications and cable joints up to 600v. Flame retardant to UL 510.