unit price for a cable Raychem HVT-Z-252/352-SG 25 / 35 KV 1/C OUTDOOR TERMINATION KIT FOR COPPER TAPE, WIRE SHIELD, TE Connectivity (TE) Raychem HVT-Z high voltage termination system features a new, co-extruded one-piece termination. The main termination component consists of the proven Raychem non-tracking tube together with a co-extruded stress control grading layer. This stress control layer is based on ceramic semi-conductor technology (ZnO) and provides superior discharge and impulse performance. When the tubing is shrunk down, the coating softens and sticks to irregular surfaces, providing moisture seals as well as electrical stress control.