National 100944 Wheel Seal - Rear

Overview of National 100944 Wheel Seal for Ford Focus

The National 100944 wheel seal is designed specifically for driveline and axle applications on Ford Focus models. Engineered with nitrile material, this oil seal ensures reliable sealing performance to protect your vehicle's wheel bearings and axle components.

• Inside diameter: 1.890 inches (48.000 mm)
• Outside diameter: 2.835 inches (72.000 mm)
• Flanged outside diameter: 3.007 inches (76.379 mm)
• Width: 0.438 inches (11.125 mm)
• Material: Durable nitrile rubber
• Includes ABS sensor ring compatibility
• Housing bore diameter: 2.833 inches (71.950 mm)
• Shaft diameter: 1.894 inches (48.108 mm)

Technical Details and Specifications

The National 100944 wheel seal is part of the 100000 series and is constructed from nitrile, a material known for its resistance to oil, heat, and wear. The seal features precise dimensions to match the Ford Focus driveline components, including an inside diameter of 1.890 inches and an outside diameter of 2.835 inches. The flanged outside diameter measures 3.007 inches, providing a secure fit within the housing bore of 2.833 inches. The seal’s width of 0.438 inches ensures proper sealing depth, while the inclusion of an ABS sensor ring footnote indicates compatibility with anti-lock braking systems on applicable Ford Focus models.

Applications and Problem Solving

This wheel seal is designed for use in the driveline and axle assemblies of Ford Focus vehicles, helping to maintain proper lubrication and prevent contamination. It addresses common issues such as:

• Preventing oil leaks from wheel bearings and axle hubs
• Protecting against dirt, dust, and moisture intrusion
• Maintaining ABS sensor ring integrity for accurate braking performance
• Reducing premature wear of driveline components
• Ensuring consistent seal performance under varying operating conditions

Installation Notes and Tips

When installing the National 100944 wheel seal on a Ford Focus, ensure the following:

• Clean the housing bore and shaft thoroughly to remove debris and old sealant
• Verify the seal orientation, with the lip facing the lubricant side
• Use appropriate tools to press the seal evenly into the housing bore without distortion
• Inspect the ABS sensor ring area for proper clearance and alignment
• Check shaft diameter compatibility to avoid seal damage during installation

Quality Assurance and Warranty

National wheel seals are manufactured to meet industry standards for durability and performance. The 100944 part number 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 for Ford Focus driveline applications.