Electrical devices with water-blocking insulation

摘要: Permeation of water between inner and outer insulating jackets an elongate electrical heater or other device along a metallic braid the is limited by means water-blocking section. The section generally placed near connected end to prevent from reaching connection. In section, jacket removed sleeve, preferably heat-shrunk polymeric over exposed length ends jacket. A water-proof sealing material sleeve part only this way, which permeates prevented passing through but permitted escape device.