National 470950 Wheel Seal - Rear Inner

National 470950 Wheel Seal Overview

The National 470950 wheel seal is engineered to provide reliable sealing performance for driveline and axle applications. Designed with precision, this oil seal features nitrile material construction and a redicoat finish to enhance durability and resistance to wear.

• Inside diameter: 1.375 inches (34.930 mm)
• Outside diameter: 2.441 inches (62.000 mm)
• Housing bore: 2.437 inches (61.900 mm)
• Width: 0.375 inches (9.530 mm)
• Material: Nitrile with redicoat coating
• Series: 470000, Type 47 oil seal

Detailed Product Description

The National 470950 wheel seal is part of the 470000 series, designed specifically for axle and driveline sealing applications. Constructed from nitrile, this seal offers excellent resistance to oil, grease, and other automotive fluids, ensuring long-lasting performance. The redicoat finish provides an additional protective layer that helps reduce friction and wear during operation. With precise dimensions including a 1.375-inch shaft diameter and a 2.441-inch outside diameter, this seal fits securely within the housing bore of 2.437 inches, maintaining a tight seal to prevent fluid leakage and contamination.

Common Applications and Problem Solving

• Prevents oil leaks in axle assemblies
• Protects driveline components from dirt and debris
• Reduces wear on shafts by maintaining lubrication
• Helps maintain proper fluid levels in wheel hubs
• Minimizes risk of seal failure due to heat and friction

Installation Notes and Tips

When installing the National 470950 wheel seal, ensure the shaft and housing bore are clean and free of debris. Use appropriate tools to press the seal evenly into the bore without damaging the sealing lip or coating. Verify the seal orientation matches the original part to maintain proper sealing function. Lubricate the seal lip lightly with compatible oil before installation to reduce initial wear.

Quality Assurance and Warranty

National wheel seals are manufactured to meet industry standards for durability and performance. The 470950 part number undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details are not provided, National products typically adhere to OEM specifications for reliable service life in automotive driveline applications.