Shields Poly X Sanitation Hose has a lifetime warranty against odor permeation. Combines the flexibility of a rubber hose with the permeation resistance of polyurethane.  Poly X can easily be slipped over most fittings. The cover is comprised of smooth polyurethane and has a glossy cover. It is heat, weather, ozone and abrasion resistant. This hose is primarily used for head to holding tank and holding tank pump out. The tube is made of smooth, white NBR and is chemical and detergent resistant. Bend Radius = 5 x I.D