Timken 223550 Wheel Seal - Rear Inner

Timken Wheel Seal for Rear Inner Applications

The Timken 223550 wheel seal is built for rear inner axle sealing where lubricant retention and contamination control matter. It is a direct-fit style seal for select Mazda B2000, B2200, B2600, and Mitsubishi Van applications, with dimensions that support accurate housing and spindle fitment.

• Material: S-Nitrile for sealing performance in driveline service
• Reinforced outer case helps resist installation damage
• Ribbed rubber inner diameter seals minor spindle imperfections and supports spindle seating
• Internal contamination exclusion system helps block debris that can lead to leakage
• Vent holes promote lubricant flow around the seal lip to reduce heat build-up
• Dimensions: 0.394 in. width, 2.294 in. outside diameter, 1.378 in. shaft diameter, 2.283 in. housing bore

Detailed Product Overview

Timken 223550 is a wheel seal for driveline and axle service, engineered to retain oil and grease while keeping contaminants out of the sealed area. The S-Nitrile construction and reinforced outer case support durability during service, while the ribbed inner diameter helps the seal seat against minor spindle irregularities. This makes it a practical choice for rear inner seal replacement on 1987-1993 Mazda B2200, 1987-1993 Mazda B2600, 1988-1990 Mitsubishi Van, and 1987 Mazda B2000 with the listed chassis note. This part cross-references National 223550 for the same application.

What This Wheel Seal Helps Address

• Gear oil or grease leakage at the rear inner wheel seal
• Contamination entering the axle seal area
• Heat-related seal wear from poor lubricant circulation
• Seal seating issues caused by minor spindle imperfections
• Damage during installation from a weak outer case

Installation Notes and Tips

Confirm shaft diameter, housing bore, and width before installation to match the axle end precisely. Clean the spindle and seal bore thoroughly, and inspect for scoring, corrosion, or wear that could affect sealing. For best results, install the seal squarely and verify that the lip seats evenly on the spindle surface.

Quality Assurance

Timken designs oil and grease seals with precision sealing features for driveline service. The 223550 uses a reinforced case, contamination exclusion features, and venting details to support consistent sealing performance in the specified rear inner applications.