National 710536 Differential Pinion Seal Multi‑Lip Fluoroelastomer

Description

Product Overview

The National 710536 Differential Pinion Seal is engineered to meet the demanding requirements of modern rear‑end differentials. Constructed from premium fluoroelastomer, the seal offers exceptional resistance to heat, ozone, oil, and a broad spectrum of automotive fluids. Its spring‑loaded, multi‑lip architecture provides a self‑adjusting seal that maintains contact under varying pressure conditions, ensuring no leakage even in the most extreme operating environments. The seal measures 3.13 x 3.13 x 0.63 inches and weighs just 1.6 ounces, making it lightweight yet robust enough to endure the rigors of daily driving and high‑performance applications. Designed for a center position, the part fits seamlessly into the differential housing, replacing OEM components with a direct, bolt‑for‑bolt match. The product carries the National brand reputation for quality and reliability, and it has earned a solid 4.2‑star rating from over twenty satisfied customers.

Usage

This seal is ideal for a wide range of repair and maintenance scenarios involving rear‑end differentials. Whether you are rebuilding a worn differential, performing a routine fluid change, or addressing a leak caused by seal degradation, the National 710536 provides a dependable solution. Its temperature range of –40°F to 400°F allows it to function in cold climates as well as under heavy load conditions where heat buildup is common. The fluoroelastomer material is compatible with conventional gear oils, synthetic lubricants, and even high‑performance racing fluids, making the seal suitable for both street‑driven vehicles and performance‑oriented machines. Mechanics, automotive enthusiasts, and professional repair shops will appreciate the ease of installation, as the seal’s dimensions align with standard differential housings without the need for additional machining or modification.

Why Choose Us

Choosing the National 710536 Differential Pinion Seal means selecting a product backed by decades of engineering expertise and a commitment to durability. National’s manufacturing process incorporates precision molding and rigorous quality control, ensuring each seal meets exacting dimensional tolerances. The fluoroelastomer compound is formulated to resist swelling, cracking, and hardening over time, which translates into a longer service life and reduced maintenance intervals for the end user. In addition, National provides responsive customer support, offering technical assistance and warranty coverage to give buyers confidence in their purchase. The seal’s design also minimizes friction and wear on adjacent components, contributing to overall drivetrain efficiency and longevity. By integrating this seal into your repair workflow, you benefit from a product that delivers consistent performance, reduces the risk of future leaks, and upholds the high standards expected by automotive professionals.

Key Features

• Durable fluoroelastomer material resists heat, oil, and chemical exposure for extended service life.
• Spring‑loaded multi‑lip design maintains a tight seal under fluctuating pressure and temperature conditions.
• Wide operating temperature range from –40°F to 400°F ensures reliable performance in extreme climates.
• Compact, center‑positioned dimensions provide a direct fit for standard rear‑end differential housings.
• National’s dedicated customer support offers technical guidance and warranty assistance for peace of mind.

FAQ

What vehicles are compatible with the National 710536 seal?

The seal is designed to fit a broad range of rear‑end differentials found in many passenger cars, light trucks, and SUVs. It matches the OEM part number 710536, so any vehicle that originally used that part will accept the National replacement.

Can this seal be used with synthetic gear oils?

Yes. The fluoroelastomer compound is chemically compatible with both conventional mineral oils and synthetic gear lubricants, making it suitable for modern high‑performance applications.

How do I install the seal correctly?

Begin by cleaning the differential housing to remove any debris or old seal residue. Apply a thin layer of compatible lubricant to the seal’s outer lip, then gently press it into the housing until it seats fully. Ensure the seal is centered and the spring‑loaded lips are properly engaged before reassembling the differential.

What warranty does National provide for this seal?

National offers a limited warranty that covers defects in material and workmanship for a period of one year from the date of purchase. Contact National’s support team with your purchase details for assistance.

Is the seal reusable after removal?

While the seal is designed for one‑time installation, it can be inspected for damage after removal. If any cracks, tears, or deformation are observed, it is recommended to replace the seal to maintain optimal sealing performance.