Timken National 455566 Oil Seal

Timken National 455566 Oil Seal is a single-lip oil seal with a spring that retains lubricants and guards rotating shaft systems against dirt, moisture, and other contaminants. It belongs to the National 450000 series and uses a nitrile (NBR) lip with solid inner-case construction, Design Type Type 45, and Redi-Coat for easier installation. Key dimensions are an inner diameter of 3.250 in (82.55 mm), an outer diameter of 4.130 in (104.90 mm), a housing bore of 4.125 in (104.78 mm), and an overall width of 0.562 in (14.275 mm). It supports a maximum shaft surface speed of 3000 ft/min and tolerates misalignment of 0.015 in at 800 rpm or 0.010 in at 4200 rpm, with a continuous operating temperature range of -40°F to 225°F (-40°C to 107°C) and a weight of 0.47 lb. Common applications include general purpose rotating equipment in industrial gearboxes, pumps, electric motors, conveyor systems, manufacturing equipment, and mining machinery, where it helps reduce lubricant leakage and protect bearings and lubricated components. Typical replacements include SKF and CR equivalents, and it is suitable for equipment replacement, rebuilds, retrofits, and preventive maintenance.