Rubber oil seal is designed for hydraulic equipments use. High tear, temperature and corrosion resistance. Widely used in automobile, mechanical equipment, engineering machinery, chemical, ship, hydropower station, aviation field, can be used for equipments like pump, hydro-cylinder or other hydraulic application that need to seal, to avoid leakage and make the machines work for long time. Flexible seal is easy to install for you. Product Name : Oil Seal Model : USH Material : Rubber Outside Diameter(Approx.) : 50mm or 1.96" Inside Diameter (Approx.) : 40mm or 1.57" Thickness(Approx.) : 6mm or 0.236" Color : Black Weight : 9g Package Content : 1 x Oil Seal Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store