Timken 472843 Oil Seal

The Timken National Oil Seal 472843 is a double-lip, spring-loaded oil seal designed to retain lubricants while blocking dirt, moisture, and other contaminants in rotating shaft systems. It’s widely used in industrial gearboxes, pumps, electric motors, conveyor systems, manufacturing equipment, and agricultural machinery—protecting bearings and lubricated components in demanding environments and reducing lubricant leakage. Key specs include Manufacturer Part Number 472843, Series 470000, and Nitrile (NBR) lip material with a solid construction and Redi-Coat. Inch-based dimensions list a shaft diameter of 1.375 in (34.93 mm), outside diameter of 2.627 in (66.73 mm), housing bore of 2.623 in (66.62 mm), and overall width of 0.375 in (9.53 mm). The seal supports up to 3000 ft/min shaft surface speed, with misalignment tolerance of 0.015 in at 800 rpm and 0.010 in at 4200 rpm, and operates from -40°F to 225°F (-40°C to 107°C). Weight is 0.11 lb (0.05 kg). Common replacements include SKF-equivalent oil seals and CR (Chicago Rawhide) equivalents within the National 470000 series.