The Timken Company 417357 Radial Shaft Oil Seal

The Timken 417357 radial shaft oil seal is a spring-loaded, multi-lip seal designed to retain lubricants and prevent contaminants from entering rotating equipment. It is used in industrial gearboxes, pumps, electric motors, conveyors, and compressors for general-purpose power-transmission sealing. Key specifications include a 4.000 in shaft diameter, 5.256 in outside diameter, 5.250 in housing bore, and 0.500 in overall width, with a steel outer case and an inner case and nitrile (NBR) lip material, plus Redi-Coat availability. The seal handles up to 3000 ft/min shaft surface speed, 7 psi pressure, a misalignment tolerance of 0.015 in at 800 rpm and 0.010 in at 4200 rpm, and an operating temperature range from -40°F to 225°F (-40°C to 107°C); common replacements include SKF 40000, CR 417357, and National 417357.