... resistance 2.double layer 3.silicone coated fiberglass line Silicone air hose Material:spring steel wire, silicone, glass fiber fabric, nylon line ... -800mmSpecification:1.high temperature duct, as suction and blast hose, suitable for hot air , blower, exhausting gas, etc.2.well Heat-resistantApplication ... -proofWorking temperature:-25 degree approx. to +300 degree approx Silicone air hose