The Timken Company 9773 Radial Shaft Oil Seal

Description:

The Timken National 9773 oil seal is a premium radial shaft oil seal engineered to retain lubricants while preventing dirt, dust, moisture, and other contaminants from entering rotating equipment. Featuring a spring-loaded multi-lip sealing design and a durable polyacrylate (ACM) sealing element, the 9773 provides reliable performance in higher-temperature applications where resistance to oxidation and petroleum-based lubricants is essential. It is commonly installed in industrial gearboxes, heavy-duty axles, wheel hubs, pumps, compressors, electric motors, and power transmission equipment. Maintenance teams, OEMs, and system integrators rely on the National 9773 for equipment repairs, seal replacements, retrofit projects, and preventive maintenance to extend service life and minimize lubricant leakage.

Applications:

The Timken National 9773 oil seal is designed for rotary shaft sealing applications requiring dependable lubricant retention and contaminant exclusion in demanding industrial environments. Its spring-loaded multi-lip construction and polyacrylate sealing material make it suitable for industrial gearboxes, wheel-end assemblies, agricultural machinery, heavy-duty axles, pumps, compressors, electric motors, and other rotating equipment exposed to elevated operating temperatures and harsh service conditions.

Technical Specifications:

• Manufacturer Part Number (MPN): 9773
• Manufacturer: Timken National
• Product Type: Oil Seal
• Seal Type: Radial Shaft Oil Seal
• Series: 9000 Series
• Seal Design: Type 74
• Material: Polyacrylate (ACM) Elastomer
• Lip Design: Spring-Loaded Multi-Lip (Double Lip)
• Design Units: Inch (Imperial)
• Shaft Diameter (ID): 2.625 in (66.68 mm)
• Outside Diameter (OD): 4.568 in (116.03 mm)
• Housing Bore Diameter: 4.564 in (115.93 mm)
• Overall Width: 0.719 in (18.26 mm)
• Construction: Solid, Without Inner Case
• Maximum Shaft Surface Speed: 3,000 ft/min
• Misalignment Tolerance: 0.015 in @ 800 rpm; 0.010 in @ 4,200 rpm
• Continuous Operating Temperature: -20°F to 300°F (-29°C to 149°C)
• Weight: Approximately 0.73 lb (0.33 kg)
• Typical Applications: Industrial gearboxes, heavy-duty axles, wheel hubs, pumps, compressors, electric motors, agricultural equipment, and power transmission systems.

Common Replacements:

• SKF Chicago Rawhide (CR) equivalent oil seal
• Federal-Mogul National 9773
• Timken National 9773 replacement oil seal