Professional grade, 7.0 mil, all-weather vinyl insulating tape used for electrical and mechanical protection in temperatures ranging from 0 F to 220 F. UL Listed and CSA Approved, EV 77B black electrical tape is lead free, flame retardant, and is engineered with a polymeric backing construction, as well as a specialized method of bonding the adhesive to the vinyl backing, which allows the tape to be highly conformable and deliver a moisture-tight seal, even in extreme temperatures.