Timken 55301S Radial Shaft Oil Seal Nitrile Lip

Description:

The Timken National Oil Seal 55301S is a heavy-duty single-lip radial shaft oil seal with a spring-loaded nitrile sealing lip designed to retain lubricants while preventing dirt, dust, moisture, and other contaminants from entering rotating shaft systems. It is manufactured for demanding industrial, manufacturing, off-highway, refinery, and power transmission applications where dependable sealing performance and long service life are required.

Applications:

The Timken National Oil Seal 55301S is engineered for large rotating shafts operating in oil- or grease-lubricated equipment. Its spring-loaded single-lip design provides reliable lubricant retention and contaminant exclusion, making it suitable for industrial gearboxes, heavy-duty pumps, compressors, conveyors, manufacturing equipment, mining machinery, and power transmission systems.

Technical Specifications:

• Manufacturer Part Number (MPN): 55301S
• Manufacturer: Timken
• Brand: National
• Product Type: Oil Seal
• Series: 50000 Series
• Seal Type: Single-Lip with Loaded Spring
• Cross Section Shape: Type 5S
• Lip Material: Nitrile Rubber (NBR)
• Durometer: 60–80 Shore A
• Case Material: Steel
• Measurement System: Inch
• Shaft Diameter (ID): 9.000 in (228.600 mm)
• Outside Diameter (OD): 10.010 in (254.250 mm)
• Overall Width: 0.750 in (19.050 mm)
• Operating Temperature: -40°F to 225°F (-40°C to 107°C)
• Construction: Solid Metal Case with Spring-Loaded Sealing Lip
• Typical Applications: Industrial Gearboxes, Manufacturing Equipment, Off-Highway Equipment, Oil Refineries, Pumps, Compressors, Power Transmission Systems.

Common Replacements:

• SKF Equivalent Heavy-Duty Oil Seal
• CR (Chicago Rawhide) Equivalent Oil Seal
• Federal-Mogul National 50000 Series Single-Lip Oil Seal