The Performance Tool Diesel Exhaust FluidRotary Barrel Pump, No. W54285, is resistant to gasoline, diesel, machine oil, alcohol and acidic fluids. The barrel pump fits everything from a 5-gal bucket to a 55-gal barrel, includes a standard bung fitting and is diesel exhaust fluid (DEF) compatible. Constructed with a durable polypropylene body and PTFE vanes to aid in the resistance against harsh chemicals, the pump dispenses approximately 1 gal for every 14 crank revolutions.