National 450666 Wheel Seal - Rear

Overview of National 450666 Wheel Seal for Chevrolet Vehicles

The National 450666 wheel seal is designed specifically for Chevrolet models such as the Bel Air and Corvette. Engineered to provide reliable sealing performance, this oil seal helps maintain driveline integrity by preventing oil leaks and contamination.

• Inside diameter: 1.578 inches (40.080 mm)
• Outside diameter: 2.412 inches (61.260 mm)
• Housing bore: 2.408 inches (61.160 mm)
• Width: 0.500 inches (12.700 mm)
• Material: durable nitrile rubber
• Redicoat surface treatment for enhanced wear resistance
• Part of the National 450000 series

Detailed Product Description and Specifications

The National 450666 wheel seal is constructed from nitrile, a synthetic rubber known for its resistance to oil, heat, and abrasion. This material choice ensures the seal maintains its integrity under typical operating conditions found in Chevrolet Bel Air and Corvette driveline systems. The seal features a precise inside diameter of 1.578 inches (40.080 mm) to fit the shaft snugly, while the outside diameter of 2.412 inches (61.260 mm) matches the housing bore of 2.408 inches (61.160 mm) for a secure fit. With a width of 0.500 inches (12.700 mm), the seal provides adequate surface area to prevent leaks. Additionally, the Redicoat treatment enhances the seal’s durability by reducing friction and wear during operation.

Applications and Common Issues Addressed

• Prevents oil leaks in Chevrolet Bel Air and Corvette driveline assemblies
• Protects against dirt and debris contamination in axle and wheel hubs
• Reduces premature wear on shafts by maintaining proper lubrication
• Helps maintain optimal driveline performance and vehicle safety
• Replaces worn or damaged seals to restore sealing effectiveness

Installation Notes and Tips

• Ensure the shaft and housing bore are clean and free of debris before installation
• Use appropriate tools to press the seal evenly into the housing bore without distortion
• Verify the seal orientation matches the original part to maintain proper sealing function
• Inspect the shaft for wear or damage that could compromise the new seal
• Apply a light coating of compatible lubricant on the seal lip before installation

Quality Assurance and Warranty Information

National 450666 wheel seals are manufactured to meet industry standards for durability and performance. The use of nitrile material and Redicoat treatment ensures consistent sealing under normal operating conditions. This part is backed by National’s quality control processes, providing confidence in fitment and function for Chevrolet Bel Air and Corvette applications. Warranty coverage details should be confirmed with the original equipment manufacturer or authorized distributor.