National 8312 Wheel Seal - Front Inner

National 8312 Wheel Seal Overview

The National 8312 wheel seal is designed for reliable sealing performance in Ford Bronco II and Ranger driveline systems. Constructed from durable nitrile material, this oil seal helps maintain proper lubrication and prevent contamination in axle assemblies.

• Inside diameter: 2.136 inches (54.250 mm)
• Outside diameter: 2.910 inches (73.914 mm)
• Flanged outside diameter: 3.110 inches (78.994 mm)
• Width: 0.326 inches (8.280 mm)
• Material: Nitrile with Redicoat coating
• Series: 8000, Type 272 oil seal

Detailed Product Description

The National 8312 wheel seal is engineered to fit precisely within the housing bore of 2.904 inches (73.761 mm) and accommodate shafts measuring 2.136 inches (54.250 mm) in diameter. Its nitrile composition offers resistance to oil, grease, and other automotive fluids, while the Redicoat treatment enhances durability and wear resistance. This seal is part of National's 8000 series, known for consistent sealing performance in driveline and axle applications.

Compatible Vehicles and Applications

This wheel seal is compatible with Ford Bronco II and Ford Ranger models, providing a reliable sealing solution for their axle and driveline assemblies. The National 8312 helps prevent oil leaks and contamination, which can lead to premature wear or failure of axle components.

• Prevents oil leakage from axle assemblies
• Protects against dirt and debris ingress
• Maintains proper lubrication of driveline components
• Reduces risk of axle bearing damage
• Helps extend service life of axle seals and bearings

Installation Notes and Tips

Ensure the housing bore and shaft are clean and free of debris before installation. The seal should be pressed evenly into the bore to avoid distortion. Use appropriate tools to avoid damaging the seal lip or flange. Verify the seal orientation matches the original part to maintain proper sealing function.

Quality Assurance and Warranty

National wheel seals are manufactured to meet industry standards for durability and performance. The 8312 part number undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty terms may vary, National typically offers coverage against manufacturing defects to support long-term reliability.