Timken 415991 Industrial Radial Shaft Oil Seal

The Timken National 415991 industrial radial shaft oil seal provides reliable lubricant retention and contaminant exclusion for heavy‑duty rotating equipment, including industrial gearboxes, pumps, electric motors, conveyors, compressors, and mining machinery. This Type 41 seal features a multi‑lip nitrile construction with a spring, housed in a steel case with inner case and a Redi‑Coat finish, and it is sized for a 3.500 in shaft (88.900 mm) with a 4.506 in outside diameter (114.452 mm) and a 4.501 in housing bore (114.325 mm), overall width 0.468 in (11.887 mm). Key specifications include lip material NBR, Series 410000, and a Redi‑Coat coating for enhanced durability; maximum shaft surface speed of 3000 ft/min, a 7 psi pressure rating, and misalignment tolerance of 0.015 in at 800 rpm or 0.010 in at 4200 rpm, with an operating temperature range from -40°F to 225°F (-40°C to 107°C). Common replacements include SKF 34889, CR 415991, and National 415991.