National 414045 Wheel Seal - Rear

Overview of National 414045 Wheel Seal for Buick Models

The National 414045 wheel seal is designed to provide reliable sealing performance for select Buick vehicles, including the Century, Roadmaster, and Skylark. Engineered with nitrile material and featuring precise dimensions, this oil seal helps maintain driveline integrity and prevent leaks.

• Inside diameter: 1.875 inches (47.630 mm)
• Outside diameter: 2.786 inches (70.760 mm)
• Housing bore: 2.782 inches (70.660 mm)
• Width: 0.500 inches (12.700 mm)
• Material: durable nitrile rubber
• Redicoat surface treatment for enhanced wear resistance
• Series: 410000, Type: 41

Detailed Product Description and Specifications

The National 414045 wheel seal is an oil seal specifically designed for driveline and axle applications. Constructed from nitrile, a material known for its resistance to oil, heat, and abrasion, this seal ensures a tight fit around the shaft and housing bore. The seal’s inside diameter measures 1.875 inches (47.630 mm), matching the shaft size, while the outside diameter of 2.786 inches (70.760 mm) fits securely within the housing bore of approximately 2.782 inches (70.660 mm). With a width of 0.500 inches (12.700 mm), the seal provides adequate surface area to maintain effective sealing under typical operating conditions. The Redicoat treatment enhances the seal’s durability by reducing wear and extending service life. This part is part of National’s 410000 series, Type 41, indicating its compatibility and design standards within the product line.

Compatible Buick Models and Applications

This wheel seal is compatible with the following Buick models:

• Buick Century
• Buick Roadmaster
• Buick Skylark

It is intended for use in driveline and axle sealing systems where maintaining oil containment and preventing contamination are critical.

Common Issues Addressed by National 414045 Wheel Seal

• Prevents oil leaks from axle or driveline components
• Reduces contamination ingress that can cause premature wear
• Maintains proper lubrication within the axle housing
• Minimizes shaft and housing damage due to seal failure
• Helps avoid driveline noise and vibration caused by seal degradation

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 oil containment direction
• Lubricate the seal lip with clean oil prior to installation to reduce initial wear
• Inspect the shaft for wear or damage that could compromise seal performance

Quality Assurance and Warranty Information

National wheel seals are manufactured to meet industry standards for durability and performance. The 414045 seal undergoes rigorous quality control to ensure dimensional accuracy and material integrity. This product includes a limited warranty against defects in material and workmanship, providing confidence in its reliability for Buick Century, Roadmaster, and Skylark driveline applications.