Description
Product Overview
The National Transfer Case Output Shaft Seal is engineered with a spring‑loaded, multi‑lip configuration that offers consistent sealing performance across a wide temperature spectrum (-30°F to 325°F). Constructed from high‑grade machined material, it resists abrasion and dry‑run conditions, delivering durability for demanding repair tasks. Key specifications include a compact 3.3 x 0.9 x 3.3 inch size, lightweight 1.76 oz mass, and model number 710957.
Usage
This seal is ideal for automotive technicians and DIY owners working on transfer case repairs, especially in environments with extreme temperature fluctuations. It fits standard National transfer cases, providing a reliable barrier against fluid leaks and contamination. Whether servicing off‑road vehicles, heavy‑duty trucks, or everyday SUVs, the seal ensures smooth operation and extended component life.
Why Choose Us
National’s reputation for precision engineering backs this seal’s quality. The spring‑loaded design automatically compensates for shaft wear, reducing maintenance intervals. Rigorous testing guarantees performance that meets or exceeds OEM standards, giving you confidence in every installation.
Key Features
- Spring‑loaded multi‑lip design for adaptive sealing
- Operates reliably from -30°F to 325°F
- Machined exterior offers superior abrasion resistance
- Lightweight compact form factor for easy handling
- OEM‑compatible model 710957 for seamless fit
FAQ
What vehicles are compatible with this seal?
The seal fits National transfer cases that use the 710957 part number, commonly found in many SUV and truck models.
Can the seal be reused after removal?
While the seal is designed for durability, it is recommended to replace it with a new unit to ensure optimal sealing performance.
How does the spring‑loaded design benefit the seal?
The spring mechanism maintains constant pressure on the shaft, accommodating wear and thermal expansion, which prevents leaks.
Is special tooling required for installation?
Standard seal installation tools are sufficient; the compact size allows for easy access in tight engine bays.
What warranty does National provide?
National offers a limited warranty covering manufacturing defects for a period of one year from the date of purchase.
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