Opto-Matic® oilers provide a constant level of oil in a pump bearing housing, gear box, or other oil sump applications. Throughout processing industries, the Opto-Matic® oiler is the industry standard. Different reservoir capacities allow use in many applications. LS, EH and EHB models have a large surge chamber to minimize potential of leakage during oil surge conditions. Opto-Matic® Oil Reservoir, Type EH Constant Level, 1 Outlets, Butyrate Plastic Bowl, 8 oz Container, Surface Mounting, 1/4 in NPT Thread, 2-5/8 in Diameter, 6-3/16 in Height, 165 °F Operating, Zinc Plated Steel Components