SKF 17727 Differential Pinion Seal - Front or Rear

SKF Differential Pinion Seal 17727

SKF differential pinion seal 17727 is built for rear axle sealing where the pinion shaft enters the differential housing. With a 1.739 shaft diameter, 3.006 outside diameter, and 0.500 width, it is sized for a precise seal interface that helps retain gear lubricant and block road contaminants.

Use this SKF pinion seal for rear differential service on classic Chevrolet applications, including Chevrolet Bel Air, Chevrolet Impala, and Chevrolet Corvette. The 17727 seal uses a polyacrylate sealing surface type selected for demanding driveline environments.

Key Features

• Part number 17727 differential pinion seal for rear axle service
• 1.739 shaft diameter for the pinion shaft sealing surface
• 3.006 outside diameter for housing fitment
• 0.500 width for the seal profile
• Polyacrylate sealing surface type for driveline sealing applications
• Fits 1955-1964 Chevrolet Bel Air, rear
• Fits 1959-1964 Chevrolet Impala, rear
• Fits 1956-1962 Chevrolet Corvette, rear

Detailed Description

SKF has a long history in seal engineering, and this differential pinion seal reflects that experience with application-specific design and premium material selection. The 17727 is made to maintain proper sealing performance at the pinion area, where differential lubricant retention is critical to axle operation. For buyers searching for a rear differential pinion seal for 1955-1964 Chevrolet Bel Air, 1959-1964 Chevrolet Impala, or 1956-1962 Chevrolet Corvette, this part number provides a direct service replacement option. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Gear oil seepage at the differential pinion area
• Contamination entering the rear axle housing
• Seal wear from age, heat, and driveline use
• Loss of lubricant that can affect differential operation
• Service needs during rear axle rebuild or maintenance

Installation Notes and Tips

Inspect the pinion shaft, seal bore, and sealing surface before installation. Clean the housing thoroughly and verify the replacement seal matches the shaft diameter and outside diameter requirements for the axle assembly. Proper alignment during installation helps the seal seat evenly and maintain contact at the pinion surface. Confirm rear-position application and vehicle fitment before assembly.

Quality Assurance

SKF designs and manufactures seals to specific application requirements using premium materials and controlled production standards. The brand’s seal engineering heritage includes early integrated shaft seal development and continued focus on long-life sealing performance in automotive driveline service.