Sierra Poly X Shields Sanitation Hose 1 Sierra Shields Poly X Sanitation Hose has a lifetime warranty against odor permeation. The Poly X hose can easily be slipped over most fittings and the polyurethane cover is extremely abrasion resistant Features Glossy cover for easy clean up Heat, weather, ozone, and abrasion resistant Combines the flexibility of a rubber hose with the permeation resistance of polyurethane Can easily be slipped over most fittings and the polyurethane cover is extremely ab