National 471224 Wheel Seal - Rear or Rear Inner

Overview of National 471224 Wheel Seal

The National 471224 wheel seal is engineered to provide reliable sealing performance for driveline and axle applications. Designed with precision, this oil seal helps maintain proper lubrication and prevent contamination in vehicle wheel hubs, making it suitable for various automotive makes and models requiring a 1.000 inch shaft diameter.

• Inside diameter: 1.000 inch (25.400 mm)
• Outside diameter: 1.503 inch (38.180 mm)
• Width: 0.250 inch (6.350 mm)
• Material: durable nitrile for resistance to oil and wear
• Redicoat coating for enhanced corrosion protection
• Housing bore size: 1.499 inch (38.070 mm)
• Series: 470000, Type: 47
• Zero duplication part ensuring unique fitment

Technical Details and Material Specifications

This National wheel seal (part number 471224) is constructed from nitrile, a synthetic rubber known for its excellent resistance to petroleum-based oils and greases. The seal’s dimensions include a 1.000 inch (25.400 mm) inside diameter and a 1.503 inch (38.180 mm) outside diameter, with a width of 0.250 inch (6.350 mm). The Redicoat finish provides additional protection against corrosion, extending the service life of the seal in harsh operating environments. The housing bore is precisely sized at 1.499 inches (38.070 mm) to ensure a secure fit within the axle assembly.

Applications and Common Issues Addressed

This wheel seal is commonly used in driveline and axle assemblies for vehicles requiring a 1.000 inch shaft diameter. It is compatible with various automotive makes and models that specify these dimensions for their wheel seals.

• Prevents oil leaks from wheel hubs and axle assemblies
• Protects bearings and internal components from dirt and moisture ingress
• Reduces wear caused by contamination and lubrication loss
• Helps maintain proper lubrication levels within the driveline
• Minimizes risk of axle seal failure and associated driveline damage

Installation Notes and Tips

When installing the National 471224 wheel seal, ensure the shaft and housing bore are clean and free of debris. Use appropriate tools to press the seal evenly into the housing bore without damaging the sealing lip or the Redicoat surface. Verify the seal orientation matches the original equipment specifications to maintain proper sealing function. Lubricate the seal lip lightly with compatible grease or oil before installation to reduce initial wear.

Quality Assurance and Warranty

National wheel seals are manufactured to meet stringent quality standards for durability and performance. The 471224 part is a zero duplication part, ensuring unique fitment and traceability. While specific warranty terms may vary, National typically offers coverage against manufacturing defects to support reliability in automotive driveline applications.