Nitrile Recommended for a wide range of oils, oil and water emulsions, diesel fuel, lower fraction hydrocarbons, kerosene, lubricating and machine cutting oil. 3. VITON impellers are recommended when pumping hydrocarbons. Specifications Impeller material: Nitrile Drive type: Through-Hole pin Temperature range: 50 degree F (10 degree C) to 180 degree F (82.2 degree C) Number of blades: 6 Diameter: 2″ (51 mm) Width: 7/8″ (22.2 mm) Shaft diameter: 1/4″ (12.7 mm)