National 710680 Transfer Case Output Shaft Seal - Rear

National Transfer Case Output Shaft Seal Overview

The National 710680 transfer case output shaft seal is engineered for reliable sealing performance in select Nissan and INFINITI vehicles. Designed to maintain optimal fluid retention, this oil seal helps protect your transfer case from leaks and contamination.

• Compatible with Nissan Murano, X-Trail, and INFINITI JX35 models
• Part number 710680 ensures precise fitment and quality
• Constructed from durable polyacrylate sealing material
• Clockwise-spiral lip design for effective sealing under rotational motion
• Dimensions: 2.323 inch (59 mm) inside diameter, 3.157 inch (80.2 mm) outside diameter, 0.472 inch (12 mm) thickness

Technical Specifications and Design Features

This transfer case output shaft seal from National features a polyacrylate material known for its resistance to heat and wear, suitable for demanding automotive environments. The seal incorporates a clockwise-spiral lip design that enhances sealing efficiency by directing fluid back into the transfer case, reducing leakage risks. With an inside diameter of 2.323 inches (59 mm) and an outside diameter of 3.157 inches (80.2 mm), it fits precisely into the housing bore of 3.150 inches (80 mm). The overall width, including the side lip, measures 0.709 inches (18 mm), providing a secure and stable seal around the output shaft.

Compatible Vehicles and Applications

This National 710680 transfer case output shaft seal is compatible with the following vehicles:

• Nissan Murano
• Nissan X-Trail
• INFINITI JX35

It is specifically designed to replace worn or damaged seals in the transfer case output shaft area, helping maintain proper lubrication and preventing dirt and debris ingress.

Common Issues Addressed by This Seal

• Prevents transfer case fluid leaks that can lead to low lubrication levels
• Reduces contamination from dirt and moisture entering the transfer case
• Minimizes wear on the output shaft and surrounding components
• Helps maintain transfer case performance and longevity
• Eliminates noise and vibration caused by fluid loss or seal failure

Installation Notes and Tips

• Ensure the housing bore is clean and free of debris before installation
• Use proper tools to avoid damaging the seal during installation
• Verify the seal orientation matches the clockwise-spiral lip design for optimal sealing
• Check shaft and bore dimensions to confirm compatibility with part number 710680
• Apply a light coating of transfer case fluid to the seal lip before installation to reduce initial wear

Quality Assurance and Warranty

National transfer case output shaft seals are manufactured to meet industry standards for durability and performance. The polyacrylate material and precise engineering ensure consistent sealing under normal operating conditions. This product is part of National's 710600 series, known for reliable sealing solutions in automotive transfer cases. Warranty coverage details should be confirmed with the original equipment provider or distributor.