Oil Seals are commonly used in driveshafts, crankshafts and hydraulic cylinders where a rotating shaft is lubricated by oil or grease. The seal works like a cap, covering the clearance between the shaft and housing, stopping fluids from leaking whilst preventing containments from entering the chamber. PU Coated Roller | Spider Coupling Pad | Polyurethane Lined Roller | Flush Bottom Valve Diaphragm | Diaphragm | Irrigation Valve Diaphragm | Tricolover Gasket | Food Grade EPDM , EDPM Diapharagms , Pvc Conveyor Belt , Butterfly Valve Sleeve , Pneumatic Seal , Hydraulic Seal , Chevron Packing , Valve Body Diaphragm , Connector Coupling Pad