National 5756 Wheel Seal - Front Inner

National 5756 Wheel Seal Overview

National 5756 is a wheel seal built for driveline and axle sealing applications where a precise fit and stable sealing surface matter. This National wheel seal uses felt material and is specified as an oil seal in the 5000 series, with dimensions that support accurate replacement work on the shaft and housing bore.

For buyers searching for a National 5756 wheel seal, wheel seal replacement, or an oil seal for axle service, the key dimensions are 2.062 in. inside diameter, 3.156 in. outside diameter, and 0.240 in. width. It is also identified with a 3.151 in. housing bore and 2.062 in. shaft size, which helps when matching the seal to the correct assembly.

Key Features

• Brand: National
• Part number: 5756
• Part description: Oil seal
• Material: Felt
• Series: 5000
• Inside diameter: 2.062 in. / 52.370 mm
• Outside diameter: 3.156 in. / 80.160 mm
• Housing bore: 3.151 in. / 80.040 mm
• Width: 0.240 in. / 6.100 mm
• Type: 29

Detailed Description

National 5756 is engineered as a sealing component for wheel and axle service where dimensional accuracy is critical. The felt construction and listed shaft, bore, and width measurements make it easier to identify the correct replacement during maintenance or rebuild work. National has focused on sealing solutions for decades, and this part reflects that experience in a format suited to modern driveline and axle applications. This part cross-references Monroe Shocks & Struts 5756 for the same application.

Search terms such as National 5756 wheel seal, 5756 oil seal, and wheel seal for axle service are commonly used by technicians and parts buyers looking for a direct-fit sealing solution. It is also a relevant replacement reference for vehicle service on applications such as Honda Civic and similar driveline repair searches where the seal dimensions must match exactly.

What It Helps Address

• Gear oil or lubricant leakage at the wheel or axle seal area
• Contamination entering the sealed hub or axle assembly
• Wear-related sealing loss from an aged or hardened seal
• Incorrect seal sizing during wheel seal replacement
• Service issues tied to a damaged or deteriorated oil seal

Installation Notes and Tips

Confirm the shaft diameter, housing bore, outside diameter, and width before installation. Clean the sealing surface and inspect the mating components for scoring, corrosion, or wear that could affect seal performance. Use proper installation tools to seat the seal evenly and avoid distortion of the felt sealing material. Verify the application against the vehicle service information before final assembly.

Quality Assurance

National is recognized for sealing products and has supplied premium sealing solutions for more than 75 years. The brand’s engineering focus supports accurate replacement selection for driveline and axle service, including wheel seal applications such as National 5756.