National 472287 Wheel Seal - Rear Inner

National 472287 Wheel Seal Overview

The National 472287 wheel seal is engineered to provide reliable sealing performance for driveline and axle applications. Designed with precision nitrile material and a Redicoat finish, this oil seal ensures effective protection against contaminants and fluid leaks in vehicles requiring a 1.375 inch shaft diameter.

• Inside diameter: 1.375 inches (34.930 mm)
• Outside diameter: 2.110 inches (53.590 mm)
• Width: 0.312 inches (7.920 mm)
• Material: Durable nitrile compound
• Redicoat finish for enhanced corrosion resistance
• Housing bore size: 2.106 inches (53.490 mm)
• Series: 470000, Type 47 oil seal
• Zero duplication part ensuring unique fitment

Technical Details and Material Specifications

This National wheel seal, part number 472287, is constructed from nitrile, a synthetic rubber known for its resistance to oil, heat, and wear. The seal’s dimensions include an inside diameter of 1.375 inches (34.930 mm) to fit shafts precisely, and an outside diameter of 2.110 inches (53.590 mm) designed to fit housing bores measuring approximately 2.106 inches (53.490 mm). The 0.312 inch (7.920 mm) width provides a compact yet effective sealing surface. The Redicoat coating enhances the seal’s durability by protecting against corrosion and extending service life in demanding automotive environments.

Applications and Problem Solving

The National 472287 wheel seal is suitable for use in various driveline and axle assemblies, particularly in vehicles requiring a 1.375 inch shaft seal. It is compatible with many automotive makes and models that specify this size and type of oil seal. This part addresses common issues such as:

• Preventing oil leaks from axle housings
• Protecting wheel bearings from dirt and moisture intrusion
• Reducing premature wear caused by contamination
• Maintaining proper lubrication within driveline components
• Ensuring reliable seal performance under varying temperature conditions

Installation Notes and Tips

When installing the National 472287 wheel seal, ensure the housing bore and shaft are clean and free of debris. Use appropriate tools to press the seal evenly into the bore without distortion. Verify the seal orientation matches the oil seal design, with the Redicoat side facing outward for corrosion protection. Avoid excessive force during installation to prevent damage to the nitrile sealing lip.

Quality Assurance and Warranty

National manufactures the 472287 wheel seal to meet industry standards for durability and performance. The part is a zero duplication component, ensuring unique fitment and reliable operation. While specific warranty details are not provided, National’s reputation for quality in driveline sealing systems supports confidence in this product’s longevity and effectiveness.