HPS 5/8" ID Black high temp reinforced silicone heater hose 10 feet roll, Max Working Pressure 70 psi, Max Temperature Rating: 350F, Bend Radius: 3" Max Temperature Rating: 350F. Max Working Pressure: 70 psi. Bend Radius: 3" Meet and exceed SAEJ20 industry standards, great for marine and industrial use, custom turbo or radiator cooling system. Silicone hose is NOT compatible with fuel or oil; however, it is compatible with water and anti-freeze such as coolant. High burst strength and excellent heat resistance. High burst strength and excellent heat resistance.