Self-amalgamating high-voltage insulating tape 19 mm wide, 0.5 mm thick, and 9.1 m long, used to insulate and seal medium-voltage cable joints and terminations. When stretched and wrapped, the layers fuse into a homogeneous void-free insulation that resists moisture, ozone, and UV. Typical applications include jointing on rubber and thermoplastic HV cables and bus-bar insulation in switchgear.