National Drive Axle Shaft Seal for 2009–2018 Ford F-150 — 710950 spring-loaded multi-lip, high-temp durability

The National 710950 drive axle shaft seal is a spring-loaded, multi-lip axle seal engineered to stop leaks and protect drivetrain components on compatible Ford and Lincoln trucks and SUVs.

This heavy-duty axle seal is built by National, a supplier with decades of experience in automotive sealing solutions. The 710950 is designed to match factory-style fit and function for select Ford F-150 model years and a range of other Ford and Lincoln vehicles, offering wide fluid compatibility and high temperature durability for repairs or maintenance.

Will this seal fit my vehicle and how can I verify it?

Compatibility depends on the vehicle year, model, engine and trim—do not assume fitment without checking. Use the seller’s vehicle selector or the product "Confirm Fit" tool to enter your exact vehicle details and review any additional notes before ordering.

• Common fits include many 2009–2018 Ford F-150 configurations.
• Also used on certain Ford Explorer, Expedition, Mustang, and Lincoln Navigator models.
• Confirm with year, make, model, engine and trim; pay attention to any qualifier icons or notes.

How does the 710950 seal handle heat and different fluids?

The seal is rated to operate from −40°F up to 400°F (−40°C to 204°C), giving it strong resistance to high under-hood and axle temperatures. Its materials are chosen to tolerate a wide range of drivetrain fluids so it performs reliably in service conditions where oil and gear lubricants are present.

• Temperature range: −40°F to 400°F (−40°C to 204°C).
• Formulated for compatibility with common axle and gear fluids.
• Designed to resist heat-related hardening and degradation.

What design features make this seal effective for axle repairs?

The 710950 uses a spring-loaded, multi-lip design that maintains consistent sealing pressure against the shaft across small misalignments and wear. Multi-lip geometry provides multiple sealing barriers to limit leakage and keep contaminants out, which helps extend service life of axle bearings and gears.

• Spring-loaded inner lip ensures continuous contact with the shaft.
• Multiple lips create redundant sealing surfaces for better leak control.
• Precision molding for OEM-style fit and function during installation.

What should I know about installation and part selection?

Installation typically requires axle disassembly or access to the hub; use proper tools and follow vehicle service procedures to avoid damage. Always confirm the part number and any seller notes before purchase to reduce returns and ensure a straightforward repair.

• Compare National 710950 to your original seal part number when possible.
• Inspect the shaft and bore for wear or scoring before installing the new seal.
• Use correct installation tooling and torque specs from the vehicle manufacturer.

Who is this for: The National 710950 axle shaft seal is intended for DIY mechanics, professional technicians and fleet maintainers replacing worn or leaking axle seals on compatible Ford and Lincoln trucks and SUVs. Choose this part when you need an OEM-style, heat-resistant seal with broad fluid compatibility and reliable sealing performance—just verify fitment for your exact vehicle configuration before ordering.