The "Urethane Flex Medium-Duty" is a polyurethane flexible duct designed for abrasives, dust, and material applications. These dust collection hoses are made from medium-weight polyurethane wall material reinforced with a bronze coated spring steel wire helix. The polyurethane flexible hose materials used in this product give it excellent protection against chemicals and abrasion (external and internal). This is our best selling polyurethane duct because it combines flexibility, chemical resistance, and abrasion resistance. The high tensile strength of polyurethane also assures reliability and durability when using this product. Because polyurethane flex duct is tough, it can have thinner gauged walls when compared to rubber or vinyl. This polyurethane flexible ductwork also has excellent resistance to hydrocarbons, chemicals, ozone, dampness, skin oils, and other natural elements. The "Urethane Flex Medium-Duty" flexible duct is designed for applications with wide temperature ranges. These dust collection hoses work in temperatures ranging from -65 to +225 degrees Fahrenheit. The hose materials used in this product give it excellent flexibility when adapting to different environments, making it a great choice for a large variety of applications involving extreme temperatures. Urethanes feature superior flexibility over a wide durometer range, even at temperatures as low as -65 ºF. These dust collection hoses are available in clear and black, with the clear option being produced with food-grade materials. This material handling flexible hose is designed for medium-duty air, dust, and material applications such as concrete transport, leaf and lawn collection, woodworking chip collection, spray extraction, textile mills, and street sweeper suction.