National 5109 Wheel Seal - Front Outer

Overview of National 5109 Wheel Seal for Cadillac Eldorado and Oldsmobile Toronado

The National 5109 wheel seal is designed to provide reliable sealing performance for driveline components in select Cadillac and Oldsmobile models. Engineered with precision, this oil seal helps maintain proper lubrication and prevents contamination in the wheel hub assembly.

• Inside diameter: 2.496 inches (63.400 mm)
• Outside diameter: 3.248 inches (82.500 mm)
• Width: 0.485 inches (12.320 mm)
• Material: durable nitrile rubber for resistance to oil and wear
• Compatible with Cadillac Eldorado and Oldsmobile Toronado models
• Part number: 5109

Detailed Product Description and Specifications

The National 5109 wheel seal is part of the 5000 series and is constructed from nitrile, a synthetic rubber known for its excellent resistance to petroleum-based oils and high temperatures. With an inside diameter of 2.496 inches (63.400 mm) and an outside diameter of 3.248 inches (82.500 mm), this seal fits precisely within the housing bore measuring approximately 3.245 inches (82.420 mm). The 0.485-inch (12.320 mm) width ensures a secure fit to prevent oil leakage and contamination in the driveline system.

This oil seal is specifically designed for use in the wheel hubs of Cadillac Eldorado and Oldsmobile Toronado vehicles, providing a reliable barrier between the rotating shaft and the stationary housing. The nitrile material offers durability and longevity under typical operating conditions.

Common Applications and Problem Solving

• Prevents oil leaks from the wheel hub assembly
• Protects driveline components from dirt and debris intrusion
• Maintains proper lubrication of axle shafts
• Reduces wear on bearings and other moving parts
• Helps avoid costly driveline repairs due to seal failure

Installation Notes and Tips

• Ensure the housing bore and shaft are clean and free of debris before installation
• Use appropriate tools to press the seal evenly into the housing bore without distortion
• Check the shaft for any damage or wear that could compromise the seal
• Apply a light coating of compatible lubricant on the seal lip before installation to reduce initial friction
• Verify proper seating of the seal to prevent leaks

Quality Assurance and Warranty Information

National wheel seals are manufactured to meet industry standards for durability and performance. The 5109 part undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in the product's reliability.