National 240733 Steering Gear Worm Shaft Seal

Overview of National Steering Gear Worm Shaft Seal 240733

The National Steering Gear Worm Shaft Seal 240733 is designed to provide reliable sealing performance for steering systems in select Ford, Lincoln, and Mercury vehicles. Engineered with nitrile material, this oil seal ensures durability and effective protection against leaks in models such as the Mustang, Thunderbird, and Cougar.

• Inside diameter: 0.875 inch (22.230 mm)
• Outside diameter: 1.135 inch (28.830 mm)
• Thickness/width: 0.125 inch (3.180 mm)
• Sealing material: Nitrile for resistance to oil and wear
• Housing bore compatibility: 1.124 inch (28.550 mm)

Technical Details and Specifications

This steering gear worm shaft seal from National, part number 240733, belongs to the 240000 series and is constructed from nitrile, a material known for its oil resistance and mechanical strength. The seal features an inside diameter of 0.875 inch (22.230 mm) and an outside diameter of 1.135 inch (28.830 mm), with a thickness of 0.125 inch (3.180 mm). It is designed to fit housing bores measuring approximately 1.124 inch (28.550 mm), ensuring a precise fit for the steering gear worm shaft.

Compatible Vehicles and Applications

This steering gear worm shaft seal is compatible with a range of Ford, Lincoln, and Mercury vehicles, including the Ford Mustang, Mercury Cougar, Lincoln Versailles, Ford Thunderbird, and others such as the Bobcat, Capri, Fairmont, Monarch, Pinto, and Zephyr. It is specifically engineered to maintain steering system integrity by preventing oil leaks and contamination.

Common Issues Addressed by Part Number 240733

• Prevents oil leakage from the steering gear worm shaft
• Reduces contamination ingress into the steering system
• Maintains proper lubrication within the steering gear assembly
• Minimizes wear on steering components caused by fluid loss
• Helps avoid steering performance degradation due to seal failure

Installation Notes and Tips

When installing the National 240733 steering gear worm shaft seal, ensure the housing bore and shaft are clean and free of debris. Use appropriate tools to press the seal evenly into the housing bore without damaging the nitrile sealing surface. Verify the seal is seated flush and properly aligned to prevent premature wear or leaks. Lubricate the seal lip lightly with compatible steering fluid before installation to facilitate smooth operation.

Quality Assurance and Warranty

National manufactures this steering gear worm shaft seal to meet industry standards for durability and performance. The nitrile material offers resistance to oil and wear, contributing to a longer service life. While specific warranty details are not provided, National parts typically adhere to OEM quality requirements, ensuring reliable fitment and function in compatible Ford, Lincoln, and Mercury models.