Fast and easy processing. Robust material protects against mechanical stress. Thermoplastic inner adhesive for protection against external influences and for strain relief. Advantageous shrinkage rate for a wide range of applications. Also available with air valves for compressed air-monitored telecommunications cable systems on request. Helashrink end caps are used to seal cable ends indoors and outdoors and are suitable for all common plastic-insulated cables with a mains voltage of 0.6 - 1 kV.