Rubber Splicing Tape - Our 600 Volt Max Splicing Tape is used for insulating Splices and Terminations in Electrical Applications. 600 Volt Max Rubber Splicing Tape is Self Fusing with Liner High quality unvulcanized rubber that will bond quickly to itself to form a solid mass of water-tight protection for electrical wires Primary insulation for electrical wires and cables splices of not more than 600V Splicing tape is flexible to withstand expansion and contraction