FAG SS3339 Wheel Seal - Front

FAG SS3339 Wheel Seal Overview

FAG SS3339 is a wheel seal built for wheel end service where contamination control and grease retention matter. It is engineered with a metal shell, auxiliary lip, and nitrile sealing material to help protect bearing components from dirt, dust, and moisture while maintaining proper lubrication.

For buyers searching for a wheel seal for FAG SS3339, wheel seal replacement for axle and hub service, or an OE-style seal for wheel end maintenance, this part is built to meet vehicle manufacturer specifications.

Key Features

• Part number: SS3339
• Seal type: metal with auxiliary lip
• Sealing material: nitrile
• Bore diameter: 4.174 in / 106.02 mm
• Seal outside diameter: 4.179 in / 106.147 mm
• Seal width: 3.125 in / 79.375 mm
• Designed to help keep dirt, dust, and moisture out of the wheel end
• Helps retain grease over the life of the bearing

Detailed Description

FAG SS3339 is a wheel seal for driveline and axle applications where the seal must maintain a tight barrier at the wheel end. The metal construction provides structural support, while the auxiliary lip adds an extra sealing interface. Nitrile sealing material is commonly used in wheel end service for its balance of durability and sealing performance.

This part cross-references National 8976S and SKF 31203 for the same application. It is a practical choice for technicians and parts buyers looking for FAG SS3339 wheel seal specifications, wheel seal replacement dimensions, and a direct-fit style seal for wheel end maintenance on compatible axle assemblies.

What It Helps Address

• Grease loss at the wheel end
• Contamination from road dirt and dust
• Moisture intrusion around the bearing area
• Seal wear from wheel end service conditions
• Need for a replacement wheel seal with matching dimensions

Installation Notes and Tips

Verify bore diameter, seal outside diameter, and seal width before installation. Clean the hub and sealing surface thoroughly, and inspect the bearing and spindle area for wear or scoring before fitting the new seal. Proper seating is important to maintain sealing performance and reduce the risk of premature leakage.

Compatible With wheel end service on applications that specify SS3339 dimensions. For make/model searches, use FAG SS3339 along with the vehicle application details from the catalog listing to confirm the correct wheel seal for your axle or hub assembly.

Quality Assurance

FAG designs wheel seals using materials selected to meet vehicle manufacturer specifications and works with suppliers to maintain FAG quality standards. The seal is built to support contamination control and grease retention in demanding wheel end environments.