Frack Oilfield Fuel Discharge Hose Used to connect into frack tanks. These 400 PSI hoses are designed to discharge or convey water and oil slurry mixtures. The tube is made from nitrile, while the cover is an EPDM (ethylene propylene diene monomer — M-class — rubber)/SBR (styrene-butadiene rubber) blend. These hoses offer the following benefits:…