Snap-fiberglass fireproof jacket made of high-quality E-glass fiber yarn woven into a tube and coated with organic silicone high temperature heat treatment is made. High temperature resistant casing with fire retardant, insulation, anti-electric, soft properties. High temperature resistant casing mainly used in steel plants, smelters, glass, fire fighting equipment, large venues and other places of high temperature transformer cable insulation. Snap-fiberglass fireproof jacket is widely used in high-temperature regional power, chemical, metallurgy, shipbuilding, machinery manufacturing and other industries; metallurgical enterprises heating zone cables, fluid lines, feeding quick coupler, rolling area roller, mill and cable, tubing; sawing peripheral cables, tubing and fittings; coated steel cable car so the field product descriptions snap-on fiberglass sheath fire performance tests: high-temperature bending test thermostatic oven at 260 ℃ heating of 48 hours after the film surface without cracking or aging skin without stripping phenomenon bent low heat 1 hour after the test surface without cracking or peeling produce no surface coating at a constant temperature of -70 ℃ in the oven. Thermostatic oven coated film after test after test without continuous use off the surface or dissolved phenomenon. Flame retardant and self-extinguishing flame test no spontaneous combustion phenomena (meets UL "VW-1" and CSA "HFS" test) Temperature Test (2000hr) 260 ℃ heating tests are normal no abnormal (30sec) 1200 ℃ heating test glass fibers intact flame burning speed test is not less than 45s/25mm --- SRG-1-7kv SRG-1-4kv, (motor insulation level up to a higher level than the C-H) normal minimum dielectric breakdown voltage of 7.0 kv / min 4.0 kv / min normal average dielectric breakdown voltage 10.0 kv / min 7.0 kv / min