National 710684 Transfer Case Input Shaft Seal

Overview of National Transfer Case Input Shaft Seal 710684

The National Transfer Case Input Shaft Seal 710684 is engineered to provide reliable sealing performance for transfer cases in select Chrysler, Dodge, and Jeep vehicles. Designed with precision dimensions and durable materials, this oil seal helps maintain optimal transfer case function by preventing fluid leaks and contamination.

• Inside diameter: 2.283 inches (58.000 mm)
• Outside diameter: 3.209 inches (81.500 mm)
• Thickness/width: 0.492 inches (12.500 mm)
• Material: Fluoro-elastomer for enhanced chemical and temperature resistance
• Bi-directional lip design for effective sealing under varying rotational directions
• Compatible housing bore: 3.201 inches (81.300 mm)
• Part number: 710684, series 710600

Technical Details and Material Specifications

This transfer case input shaft seal features a bi-directional helix lip design that ensures a tight seal around the input shaft, reducing the risk of oil leakage in both rotational directions. Constructed from fluoro-elastomer, the seal offers superior resistance to heat, oil, and other automotive fluids, making it suitable for demanding transfer case environments. The precise inside diameter of 2.283 inches (58 mm) and outside diameter of 3.209 inches (81.5 mm) ensure a proper fit within the housing bore of 3.201 inches (81.3 mm), maintaining the integrity of the transfer case assembly.

Compatible Vehicles and Applications

This National transfer case input shaft seal 710684 is compatible with various Chrysler, Dodge, and Jeep models, including the Aspen, Commander, Durango, Grand Cherokee, Liberty, and Nitro. It is specifically designed to meet the sealing requirements of these vehicles’ transfer cases, ensuring reliable performance and longevity.

Common Issues Addressed by the Transfer Case Input Shaft Seal

• Prevents oil leaks from the transfer case input shaft area
• Reduces contamination ingress that can damage transfer case components
• Maintains proper lubrication within the transfer case
• Helps avoid premature wear of the input shaft and bearings
• Supports consistent transfer case operation under various driving conditions

Installation Notes and Tips

When installing the National 710684 transfer case input shaft seal, ensure the housing bore is clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the sealing lip. Verify the seal’s orientation matches the bi-directional lip design for optimal performance. It is recommended to inspect the input shaft for wear or damage before installation to prevent future leaks.

Quality Assurance and Warranty Information

National transfer case seals are manufactured to meet industry standards for durability and performance. The fluoro-elastomer material and precise engineering contribute to a reliable sealing solution. This product is part of the 710600 series and carries a manufacturer-backed warranty against defects in material and workmanship, providing confidence in its long-term use.