SKF 21070 Wheel Seal - Rear

SKF 21070 Rear Wheel Seal

SKF 21070 is a rear wheel seal built for driveline and axle service where reliable sealing matters. It is specified with a nitrile sealing surface, a 2.125 shaft diameter, 2.767 outside diameter, and 0.250 width for the listed rear applications.

Key Features

• Rear wheel seal for driveline and axle sealing service
• Nitrile sealing surface type for the application environment
• 2.125 shaft diameter
• 2.767 outside diameter
• 0.250 width
• Direct replacement part number: SKF 21070

Application Details

SKF has a long history in seal engineering, including early integrated shaft seal development and continued refinement of materials and bonding methods. This SKF 21070 wheel seal is manufactured to specific design requirements to help retain lubricant and keep contaminants out in rear axle service. It is a direct-fit option for classic Cadillac and Buick rear applications, including Fits 1958-1969 Cadillac DeVille, Rear; Fits 1965-1969 Cadillac Fleetwood, Rear; Fits 1959-1960 Buick LeSabre, Rear; Fits 1956-1958 Buick Century, Rear; and Fits 1956-1958 Buick Roadmaster, Rear.

This part cross-references 193317 and 203748H1 for the same application.

Common Problems This Seal Can Address

• Rear axle lubricant seepage at the wheel end
• Contamination entering the hub or axle area
• Seal wear from age, heat, and road exposure
• Loss of sealing performance during axle service
• Noise or maintenance issues related to compromised wheel-end sealing

Installation Notes and Tips

Verify shaft diameter, outside diameter, and width before installation to confirm the seal matches the axle housing and wheel-end dimensions. Clean the sealing surfaces thoroughly, inspect the shaft and hub for wear or scoring, and replace any damaged mating components before assembly. Proper installation helps the seal seat evenly and maintain consistent contact in rear axle service.

Quality Assurance

SKF designs and manufactures seals to high quality standards using premium materials selected for the application and operating environment. The brand’s seal engineering focus is centered on long service life and dependable protection against lubricant loss and contamination.