HPS 5/16" ID Black high temp reinforced silicone heater hose 5 feet roll, Max Working Pressure 85 psi, Max Temperature Rating: 350F, Bend Radius: 1-1/4" Max Temperature Rating: 350F. Max Working Pressure: 85 psi. Bend Radius: 1-1/4" 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. Resistant to coolants, cold leaks, cracking, peeling, aging and ozone.