SKF 39420 Wheel Seal - Rear

Overview

SKF 39420 is a wheel seal from the Scotseal Classic line, built for heavy-duty sealing applications where dependable service matters. It uses a nitrile sealing surface and precise dimensional specifications to support consistent sealing performance.

Key Features

• Scotseal Classic product line for proven sealing service.
• Nitrile sealing surface type for durable contact performance.
• Measured dimensions: 0.938 width, 5.506 outside diameter, and 3.938 shaft diameter.
• SKF 39420 is engineered for long service life in demanding driveline and axle applications.

Product Details

The SKF 39420 wheel seal is part of the Scotseal Classic family, a line known for dependable sealing in commercial-duty environments. Its nitrile sealing surface and defined dimensions help maintain the seal between service intervals when installed using proper SKF tools and procedures. This part cross-references BBB Industries 42002 for the same application. SKF 39420 is a practical choice for fleets and technicians looking for a wheel seal with established field use and consistent construction.

Common Uses

• Oil or grease leakage at the wheel seal area.
• Contamination entering the hub or bearing cavity.
• Seal wear that affects service interval reliability.
• Loss of sealing integrity after brake maintenance.

Installation Notes

Install with the correct SKF tools and procedures to achieve proper sealing performance. Verify shaft diameter, outside diameter, and width before installation to confirm dimensional match. Clean the sealing surfaces thoroughly and inspect adjacent components for wear or damage before fitting SKF 39420.

Quality Assurance

SKF states that its products are designed and manufactured to high quality standards for long life and safety. The Scotseal Classic line has extensive field use in demanding service conditions, and SKF 39420 reflects that established sealing design.