Shieldsflex II marine hose is primarily used for engine intake, wet exhaust connections (where bends or long lengths are required), bilge pump intake/discharge, scupper lines, toilet intake/discharge, and holding tank vent/pump out. The water/exhaust hose has a black synthetic rubber tube and cover and is reinforced with wire helix imbedded between plies of HD synthetic cord. Hose is resistant to exhaust fumes, ozone, mild chemicals, antifreeze, and saltwater, plus abrasions and odor permeation. Temperature ranges from -20°F - +200°F continuous, +250°F intermittent. Meets SAE J2006 Type R2 standards. Sierra Part #116-250-4001.