high dielectric insu-lating tubing that is shrinkable as much as 50% in order to provide an immovable, tight fit. Temperature requirements are approximately 90°C. for shrinking purposes with a heat cycle as short as 1 second. May be shrunk by various methods such as heat guns, boil-ing water, electrical coil heaters or in ovens.e- mail:ym67081529@yahoo.com