✔Performance-It can be used to protect shafts and bearings from dirt and foreign matter and grease seepage, and has good resistance to a variety of mineral oils,petroleum oils, hydraulic oils and lubricating greases. Xike Bearings XiKe Oil Shaft Seal, Lip Seals, TC 22x55x7mm XiKe Oil Shaft Seal, Lip Seals, TC 20x37x8mm Nitrile Rubber Cover Double Lip With Spring, Oil Seals For Bearing Shafts,Rotating Shafts,etc., Black Pack Of 2 A dust sealing lip prevents dirt ingress from the outside. A useful feature as it reduces contamination in your application, which in turn results in a longer... ✔SIZE-Metric 20mm Inner Diameter, 37mm Outside Diameter, 8mm Width. Performance-It can be used to protect shafts and bearings...Material-Made from Nitrile rubber standardized to 70A NBR... EAI Oil Seal 20mm X 35mm X 7mm (2 PCS) TC Double Lip w/Spring Oil seals are used to protect shafts and bearings from ingress of dirt and foreign matter and egress of oil or grease.