National 714569 Drive Axle Shaft Seal - Rear

Overview of National Drive Axle Shaft Seal 714569

The National 714569 drive axle shaft seal is engineered to provide reliable sealing performance for select Ford, Jaguar, Lincoln, and Mercury vehicles. Designed with precision dimensions and durable materials, this oil seal helps maintain driveline integrity and prevent fluid leaks.

• Inside diameter: 1.574 inches (39.980 mm)
• Outside diameter: 2.415 inches (61.340 mm)
• Thickness/width: 0.540 inches (13.720 mm)
• Bi-directional helix lip design for enhanced sealing
• Constructed from fluoro-elastomer for chemical and temperature resistance
• Compatible housing bore: 2.410 inches (61.210 mm)

Technical Details and Material Specifications

This drive axle shaft seal from National is part of the 714000 series and features a bi-directional lip design that improves sealing efficiency by preventing oil leakage in both rotational directions. The fluoro-elastomer material offers excellent resistance to heat, oil, and other automotive fluids, ensuring durability under demanding operating conditions. The seal’s precise dimensions, including a 1.574-inch inside diameter and 2.415-inch outside diameter, make it suitable for specific axle shaft applications requiring tight tolerances.

Compatible Vehicles and Applications

The National 714569 seal is compatible with various models from Ford, Jaguar, Lincoln, and Mercury, including the Ford Mustang and Thunderbird, Jaguar S-Type, Lincoln LS, and Mercury Cougar. This part is designed to maintain axle shaft sealing integrity, helping to prevent common driveline issues such as oil leaks and contamination.

• Prevents oil leaks from the drive axle shaft
• Reduces contamination of axle components
• Maintains proper lubrication within the driveline
• Helps avoid premature wear of axle bearings and seals
• Supports overall driveline performance and reliability

Installation Notes and Tips

When installing the National 714569 drive axle shaft seal, ensure the housing bore and shaft surfaces are clean and free of debris. Proper alignment during installation is critical to avoid seal damage. Use appropriate tools to press the seal evenly into the housing bore without distortion. Verify the seal’s bi-directional lip is oriented correctly to maximize sealing effectiveness.

Quality Assurance and Warranty

National manufactures this drive axle shaft seal to meet industry standards for durability and performance. The fluoro-elastomer material and precise engineering contribute to a reliable sealing solution. While specific warranty details may vary, National typically offers coverage against manufacturing defects to ensure customer confidence in the product.