Existence of high-voltage wires generally short life, and contains a lot on the environment and harmful substances, use of silica gel recently developed technology, a breakthrough is expected in this area, one made by the silica gel-type high pressure and high heat environment high tensile wire and cable insulated flexible tear. The flexible cords, including the conductor and the insulating layer, layered structure with the core center conductor wire for the environment outside the high-pressure high-tensile tear insulation. The flexible cable, including conductor and conductor insulation and outer sheath, which has a layered structure with the core of the cable, the center conductor of environmental protection outside the high-pressure high-tensile tear insulation package, the insulating layer outside the environmentally friendly high-pressure high-tensile tear jacket layer package. High tensile strength of high purity silica gel with high tear strength and special silica compound improves the cable's rated voltage level, the mechanical strength of the cable, and the use of lead, cadmium, chromium, arsenic, mercury, etc. heavy metals, chlorine and phosphorus curing agent and additives, no effect on the environment, comply with environmental requirements of wires and cables.