Trident Marine 2-1/2" x 50' Ocean-Flex Multipurpose Hose [321-2126]2 1 2" x 50' Ocean Flex Multipurpose Hose This unique marine hose can be used for a multitude of applications for both Commercial and Recreational Vessels including Fuel Fill, Feed, and Vent (Diesel & Gasoline Type A1), Lube Oil, Wet Exhaust, Water (Vital and Non Vital), Bilge, Coolant, Drains, and Sanitation applications. OCEAN FLEX boasts compliance with the following standards: USCG Inspected Vessels (Title 46 CFR Sub Chap. T), SAE J1942 (Code F,