For use in sealing packing and plastic flange HSI 150. The thermal sleeves offer a wide range of applications and are shrunk onto the cables under heat from the system cover fittings. Unused system cover fittings can be sealed with closure plugs. Features: mechanical fixation, bayonet and sealing, clamping nut operates independently. Bayonet system with locking mechanism and counter-screwing, protection against accidental opening HSI150 D3x58 WS.