FST Brand SAE J20 R3 Silicone Heater Hose High Temp Resistant 4 Ply Reinforced Coolant Flexible Anti-Aging for Industrial
This SAE J20 R3 Silicone Heater Hose is constructed with three layers: 100% high‑grade silicone inner tube, 4‑ply polyester aramid or glass fiber reinforcement, and protective silicone outer cover. It operates stably from -40°C to 220°C, featuring excellent heat resistance, pressure resistance, flexibility and anti‑aging performance. Unlike standard rubber hoses, it does not harden, soften or crack under extreme temperatures or long‑term use. The hose maintains smooth fluid flow without collapsing or kinking even in tight bends, ensuring easy installation and secure sealing. It is widely applied in mining, oil exploration, construction, marine, metallurgy, injection molding and heavy machinery. With low maintenance and long service life, it is the ideal high‑performance coolant and heater hose for harsh industrial environments.




















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