Oil seal 121.8 x 150 x 13/15 mm This oil seal is sized for applications requiring a bore of 121.8 mm, an outer diameter of 150 mm, and a width of 13 or 15 mm. It is designed to provide a reliable seal for rotating shafts and to help contain lubricants while preventing the ingress of contaminants. Key benefits Reduces oil leaks and keeps lubrication where it belongs Prevents dirt, dust and moisture from entering the bearing area Two width options (13 mm or 15 mm) allow a precise fit for different housings Simple replacement that supports maintenance and downtime planning Key attributes Bore (inner diameter): 121.8 mm Outer diameter: 150 mm Width: 13 mm or 15 mm Function: oil seal for rotary shaft applications Performance: designed to seal in mechanical assemblies using oil lubrication Material: not specified in the listing; verify material details in product specifications Applications and use cases Hydraulic pump assemblies: seals the shaft to prevent oil loss and contamination in pumps with a 121.8 mm bore and 150 mm mounting housing Gearboxes and gear reducers: seals the input/output shaft to maintain oil inside the gearbox and protect bearings Industrial machinery and equipment: suitable for large rotary shafts in compressors, motors, conveyors, and other machinery that use seals of this size Installation notes Confirm the housing groove dimensions match the 121.8 x 150 x 13/15 mm specification Select the correct width (13 mm or 15 mm) to ensure a proper seal gap and reliable performance seals with clean components and follow standard lubrication and bearing maintenance procedures