The 3M 33 19MM is a Scotch? Super 33™ black Electrical Insulation Tape made of PVC (polyvinylchloride) backing with pressure-sensitive rubber based adhesive. The tape is conformable for cold weather application down to 18°. It has excellent resistance to abrasion, moisture, alkalies, acids, corrosion and varying weather conditions (including ultraviolet exposure). The combination of elastic backing and aggressive adhesive provides moisture-tight electrical and mechanical protection. Compatible with solid dielectric cable insulations, rubber and synthetic splicing compounds, as well as epoxy and polyurethane resins. Suitable for primary electrical insulation for all wire and cable splices rated up to 600V and 105°C, protective jacketing for high voltage cable splices and repairs and harnessing of wire and cables.