Timken 417509 Oil Seal

The Timken National 417509 oil seal is a radial shaft seal designed to retain lubricants and prevent contaminants from entering rotating equipment. Its Type 41, multi-lip with spring configuration, nitrile (NBR) sealing element, and steel case with an inner case deliver reliable sealing in general-purpose industrial service such as gearboxes, pumps, conveyors, compressors, and electric motors. Redi-Coat coating is included. Key dimensions include a 4.000 in shaft diameter (101.600 mm), 6.005 in outside diameter (152.527 mm), 5.999 in housing bore (152.375 mm), and 0.500 in overall width (12.700 mm). Maximum shaft surface speed is 3000 ft/min. Misalignment tolerance is 0.015 in at 800 rpm and 0.010 in at 4200 rpm. The seal supports a 7 psi pressure rating and operates from -40°F to 225°F (-40°C to 107°C). Common replacements include SKF 40138, CR 417509, and National 417509.