FAG SS3940 Wheel Seal - Rear Inner

FAG SS3940 Wheel Seal Overview

FAG SS3940 is a wheel seal built for wheel end service where contamination control and grease retention matter. It uses a nitrile sealing material with a metal spring, auxiliary lip, and inner shell design to help protect bearing components from dirt, dust, and moisture.

For technicians and buyers searching for a wheel seal for Honda Civic or similar driveline service needs, SS3940 is specified to OE-style dimensions and application demands. The FAG SS3940 wheel seal is engineered to match vehicle-specific requirements for bore, outside diameter, and width.

Key Features

• Nitrile sealing material for wheel end sealing performance
• Metal, spring, auxiliary lip, and inner shell construction
• Bore diameter: 112.979 mm / 4.448 in
• Seal outside diameter: 113.208 mm / 4.457 in
• Seal width: 21.996 mm / 3.149 in
• Designed to help keep dirt, dust, and moisture out of the wheel end
• Helps retain grease over the service life of the bearing

Detailed Description

FAG SS3940 is a wheel seal for driveline and axle service applications that require precise sealing dimensions and durable material selection. FAG designs wheel seals to meet vehicle manufacturer specifications, and this part follows that approach with a nitrile sealing element and a reinforced seal structure. The seal type and dimensions are important for proper wheel end protection, especially where bearing contamination or grease loss can shorten component life. This part cross-references National 710080 for the same application.

For Honda Civic wheel seal replacement work, SS3940 provides a direct-fit style solution when the application calls for the listed dimensions and seal design. It is also referenced against SKF 31490 and part number 4133940100.

What This Wheel Seal Helps Address

• Wheel end grease leakage
• Contamination from road dirt and dust
• Moisture intrusion at the bearing area
• Premature wear caused by seal failure
• Service issues tied to incorrect seal dimensions

Installation Notes and Tips

Verify bore diameter, outside diameter, and seal width before installation. Match the seal type to the vehicle application and wheel end position, since wheel seal requirements vary by vehicle class and location. Inspect the hub, spindle, and bearing surfaces for wear or damage before pressing in the new seal. Clean the sealing surfaces thoroughly so the nitrile lip can seat correctly.

For Honda Civic service, confirm the replacement seal matches the original wheel end specification before assembly. Proper installation helps the FAG SS3940 maintain sealing contact and support bearing protection.

Quality Assurance

FAG sources wheel seals using high-quality materials and designs them to meet manufacturer specifications. The SS3940 is built to the dimensional and sealing requirements expected in wheel end service, with attention to contamination control and grease retention.