Timken 455576 Oil Seal

Timken National Oil Seal 455576 is a single-lip, spring-loaded oil seal designed to retain lubricants and prevent dirt, moisture, and other contaminants from entering rotating shaft systems. Constructed with a nitrile (NBR) lip in a solid inner-case design, this Type 45 seal from the National 450000 series provides reliable sealing for equipment replacement, rebuilds, retrofits, and preventive maintenance across industrial gearboxes, pumps, electric motors, conveyor systems, mining machinery, and general power transmission equipment. Key dimensions include an inner diameter of 5.375 in (136.53 mm), outer diameter of 6.507 in (165.28 mm), housing bore of 6.499 in (165.07 mm), and an overall width of 0.562 in (14.27 mm). It handles up to 3,000 ft/min shaft surface speed and operates continuously from -40°F to 225°F (-40°C to 107°C); misalignment tolerance is 0.015 in at 800 rpm and 0.010 in at 4,200 rpm. Weight is 1.01 lb. Manufacturer part number 455576 from Timken, under the National brand, with common replacements including SKF and Chicago Rawhide equivalents within the National 450000 series.