SKF 6641 Steering Gear Worm Shaft Seal

SKF 6641 Steering Gear Worm Shaft Seal

The SKF 6641 steering gear worm shaft seal is built for steering gear sealing applications where fluid retention and contamination control matter. It is a direct-fit sealing component for select Chevrolet and Nissan vehicles, including Nissan Maxima, Nissan Pulsar NX, and Nissan 280ZX applications.

Key Features

• Steering gear worm shaft seal for steering system sealing service
• Polyacrylate sealing surface type for use in demanding automotive environments
• Outside diameter: 1.387 in.
• Shaft diameter: 0.669 in.
• Width: 0.276 in.
• SKF part number 6641 for catalog and service identification

Product Details

SKF 6641 is a steering gear worm shaft seal designed around precise dimensional requirements: 0.669-inch shaft diameter, 1.387-inch outside diameter, and 0.276-inch width. The polyacrylate sealing surface type supports consistent sealing performance in steering gear assemblies by helping retain lubricant and keep contaminants out. SKF has a long history in seal engineering, and this part reflects that focus on application-specific design and material selection. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Compatible With 1978-1979 Nissan 510, 1979-1981 Nissan 810, 1979-1982 Nissan 310, 1979-1983 Nissan 280ZX, 1981-1986 Nissan Maxima, 1983-1986 Nissan Pulsar NX, 1983 Nissan Pulsar, and 1985-1988 Chevrolet Spectrum, standard steering gear applications. The SKF 6641 is also referenced in service catalogs under part number 6641 for these steering gear worm shaft seal applications.

What It Helps Address

• Steering gear fluid seepage at the worm shaft area
• Contamination entering the steering gear housing
• Wear-related sealing loss in older steering assemblies
• Service replacement needs on Nissan Maxima, Nissan 280ZX, and Chevrolet Spectrum steering systems
• Restoration work on standard steering gear configurations

Installation Notes and Tips

Verify shaft diameter, outside diameter, and width before installation to confirm the seal matches the steering gear housing. Inspect the worm shaft and sealing surface for scoring, corrosion, or wear that could affect seal life. Clean the sealing bore thoroughly and install the seal squarely to avoid distortion. For best results, compare the removed seal and housing dimensions against SKF 6641 before final assembly.

Quality Assurance

SKF designs and manufactures seals to specific application requirements using premium materials and controlled production standards. The brand’s seal engineering background includes decades of development focused on keeping lubricants in and contaminants out, supporting long service life in automotive steering systems.