3MTM Cold Shrink QT III Termination Kit 7640-S, 7650-S, & 7660-S Series are engineered to minimize surface stress to help evenly distribute the electrical field over the entire surface of the insulator while providing a conformable and tight seal for jacketed concentric neutral and concentric neutral power cables. Its dependable construction comprises a high dielectric constant material and silicone rubber insulation that gives reliable water resistance in outdoor applications and can be used in indoor operations as well. The product uses cold shrink technology, making for a simple installation that requires no force-fitting and conforms easily to operations in tight spaces. 3MTM Cold Shrink QT III 7640-S, 7650-S, & 7660-S Series Termination Kits comply with IEEE Standard 48, Class 1 requirements for 5, 8, 15, 25/28, and 35 kV and have specific product selections to meet varying voltage requirements ranging from 5 to 35 kV. For comprehensive technical information about a particular product in this series, please consult a 3M expert.