HPS 2 inch - 2-1/4 inch 4-ply Reinforced Reducer Coupler Silicone Hose Black 51 millimeter - 57 millimeter features 4-ply reinforced and knitted premium polyester fabric with high temperature silicone rubber, for which meet or exceed SAEJ20 Standard and is engineered for extreme temperature and various pressure ranges where high performance levels are required. HPS Silicone Hose is commonly used for joining two hard pipes while reducing the possibility of connections coming apart or having your hard pipes or other equipment break. HPS silicone hoses are used by professionals in industries such as high performance racing vehicles, commercial truck and bus, Marine, agricultural and off highway vehicles, turbo diesel, food and beverage, and general manufacturing industries. Temperature Range: - 65 degree Fahrenheit to + 350 degree Fahrenheit (177 degree Celsius). Silicone hose is compatible with water or anti-freeze such as coolant. Silicone hose is not compatible with fuel or oil.