SKF 18640 Wheel Seal - Front

SKF 18640 Wheel Seal for Front Applications

SKF 18640 is a front wheel seal built for specific driveline and axle applications where reliable sealing is critical. It uses a nitrile sealing surface and precise dimensions to help maintain lubricant retention and keep road contaminants out.

Key Features

• Wheel seal for front position applications
• Nitrile sealing surface type for dependable sealing performance
• Outside diameter: 2.725 in.
• Shaft diameter: 1.875 in.
• Width: 0.266 in.
• SKF part number 18640

Detailed Description

SKF 18640 is engineered as a wheel seal for front axle service on select Chevrolet passenger cars, including 1958-1960 Chevrolet Bel Air and 1958-1960 Chevrolet Impala. The seal dimensions are matched to the application, with a 1.875-inch shaft diameter, 2.725-inch outside diameter, and 0.266-inch width. SKF’s seal design approach focuses on material selection and dimensional accuracy to support proper sealing at the wheel end.

SKF has a long history in seal development, and this part reflects that experience with a nitrile sealing surface chosen for automotive sealing environments. If you are searching for a front wheel seal for 1958 Chevrolet Bel Air, 1959 Chevrolet Impala, or 1960 Chevrolet Bel Air front service, SKF 18640 is the direct part number to reference. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Gear oil or lubricant leakage at the wheel end
• Contamination entering the hub or axle sealing area
• Wear-related sealing loss on front axle service
• Noise or service issues caused by compromised seal integrity
• Replacement needs for 1958-1960 Chevrolet Bel Air and Impala front wheel seal service

Installation Notes and Tips

Confirm shaft diameter, outside diameter, and width before installation to ensure the seal matches the hub or axle bore. Inspect the sealing surface and mating components for wear, scoring, or contamination before fitting SKF 18640. Clean the sealing area thoroughly and install the seal squarely to avoid distortion.

Quality Assurance

SKF manufactures seals to specific designs using premium materials and controlled production standards. The brand’s seal engineering heritage dates back to the first integrated shaft seal in 1928, and SKF 18640 is built to support long service life in automotive wheel-end applications.