HPS 1/2" ID (13mm) Black high temp reinforced silicone heater hose 25 feet roll meet and exceed SAEJ20 industry standards, ideal for heavy duty pressure connections and provides excellent resistance for high temperature applications. HPS performance silicone is designed and engineerd to meet high performance requirements specified in various industry standards, therefore make it great for marine and industrial use, custom turbo or intercooler piping fabrication, DIY intake or radiator cooling system. Key Features: Made of premium industrial grade high temp reinforced silicone. Heavy wall design gives it the ability to handle extreme pressure. Ultra flexible & Excellent tensile strength. Technical Specification: Product Type: Silicone . Temperature Range:- 65 deg. F to + 350 deg. F (177 deg. C). Hose Inside Diameter: 1/2" (13mm). Hose Outside Diameter: 3/4" (19mm). Max. Working Pressure: 80 psi. Bend Radius: 2-1/2". Wall Thickness: 3mm. Hose Length: 25 feet roll. Color: Black. UV and ozone resistant. Remark: Silicone hose is NOT compatible with fuel or oil; however, it is compatible with water and anti-freeze such as coolant. Silicone heater hose is shipped in one single continuous roll instead of multiple single foot section.