Timken 8704S Single Lip Radial Shaft Oil Seal

Description:

The Timken National 8704S oil seal is a premium single-lip radial shaft oil seal engineered to retain lubricants while preventing the ingress of dirt, dust, moisture, and other contaminants in rotating equipment. Manufactured from durable nitrile rubber with a spring-loaded sealing lip, it delivers dependable sealing performance for industrial, automotive, agricultural, and heavy-duty machinery. Commonly installed in gearboxes, wheel hubs, axles, pumps, electric motors, and power transmission equipment, the National 8704S is widely selected by maintenance teams, OEMs, and system integrators for equipment repairs, seal replacements, retrofit projects, and preventive maintenance to extend equipment life and reduce lubricant loss.

Applications:

The Timken National 8704S oil seal is designed for rotary shaft sealing applications where reliable lubricant retention and contaminant exclusion are critical. Its spring-loaded single-lip design makes it suitable for industrial gearboxes, agricultural machinery, heavy-duty axles, wheel-end assemblies, pumps, compressors, electric motors, and general rotating equipment operating in demanding industrial environments.

Technical Specifications:

• Manufacturer Part Number (MPN): 8704S
• Manufacturer: Timken National
• Product Type: Oil Seal
• Seal Type: Radial Shaft Oil Seal
• Seal Design: Type 33
• Series: 8000 Series
• Material: Nitrile (Buna-N) Rubber
• Lip Design: Single Lip with Spring
• Shaft Diameter: 1.893 in (48.082 mm)
• Outside Diameter: 2.438 in (61.925 mm)
• Housing Bore: 2.434 in (61.824 mm)
• Overall Width: 0.250 in (6.35 mm)
• Design Units: Inch (Imperial)
• Construction: Solid, Spring-Loaded
• Maximum Shaft Surface Speed: 3,000 ft/min
• Continuous Operating Temperature: -40°F to 225°F (-40°C to 107°C)
• Typical Applications: Industrial gearboxes, wheel hubs, axles, pumps, compressors, electric motors, agricultural equipment, and power transmission systems.

Common Replacements:

• SKF Chicago Rawhide (CR) Equivalent Oil Seal
• Federal-Mogul National 8704S
• Timken National 8704S Replacement Seal