The function of moisture-sealing tapes such as vinyl, rubber, and mastic products is to exclude moisture from the insulation assembly and provide electrical insulation. One of these tapes — or alternately a mastic pad — generally forms the second layer of the insulation assembly. Rubber, mastic, and filler tapes are also used to pad the underlying surface by covering sharp edges.

Another significant advantage of 3M HT Insulation Tape is its electrical insulation capabilities. The tape is constructed from high-quality materials that provide excellent dielectric strength, which is crucial in preventing electrical failures and ensuring the safe operation of equipment. This makes it an ideal choice for insulating wires, cables, and other electrical components in various applications. Whether used in motors, transformers, or circuit boards, 3M HT Insulation Tape helps to enhance performance and longevity while minimizing the risk of short circuits and other electrical hazards.

3M also makes an electrical tape made of silicone rubber for applications where Class “H” (180°C/356°F) temperatures are encountered i.e., silicone rubber cables.