The 3M Scotch 77 Electric Arc Proofing Tape is a fire-retardant insulation tape designed for high-risk areas where arc and flame exposure is a concern.With its thick, durable construction and flame-suppressing compound, it safeguards cables and electrical components from intense heat and fire damage. Ideal for power cable bundling in substations, switchgear, and industrial zones, this black sealing tape combines fire resistance with reliable adhesion, forming part of the trusted 3M insulation tapes range.