National 710682 Transfer Case Output Shaft Seal - Front

Overview of National Transfer Case Output Shaft Seal 710682

The National Transfer Case Output Shaft Seal 710682 is engineered to provide reliable sealing performance for a range of vehicles including Cadillac Escalade, Chevrolet Silverado 1500, and GMC Yukon XL 2500. Designed with durable fluoro-elastomer material, this oil seal ensures effective protection against leaks and contamination in transfer case applications.

• Inside diameter options: 1.732 inches (44.000 mm)
• Outside diameter: 2.764 inches (70.200 mm)
• Flanged outside diameter: 3.000 inches (76.200 mm)
• Thickness: 0.461 inches (11.700 mm)
• Overall width with side lip: 0.614 inches (15.600 mm)
• Material: Fluoro-elastomer for enhanced chemical and temperature resistance
• Compatible with multiple GM and Korean vehicle models

Technical Details and Specifications

This transfer case output shaft seal from National, part number 710682, belongs to the 710600 series and is constructed from fluoro-elastomer, a material known for its resistance to heat, oil, and other automotive fluids. The seal features a precise inside diameter of 1.732 inches (44 mm) to fit the output shaft snugly, while the outside diameter of 2.764 inches (70.2 mm) and flanged outside diameter of 3.000 inches (76.2 mm) ensure a secure fit within the housing bore. The thickness of 0.461 inches (11.7 mm) and overall width with side lip of 0.614 inches (15.6 mm) provide a robust sealing surface to prevent fluid leakage and contamination.

Compatible Vehicles and Applications

This transfer case output shaft seal is compatible with a variety of vehicles, including:

• Cadillac Escalade, Escalade ESV, Escalade EXT
• Chevrolet Avalanche, Silverado 1500, Suburban 1500, Tahoe, Express 1500, Express 2500
• GMC Sierra 1500, Yukon, Yukon XL 1500, Yukon XL 2500, Savana 1500, Savana 2500
• Hummer H2
• Hyundai Santa Fe
• Kia Borrego, Sorento

Common Issues Addressed by This Seal

• Prevents transfer case fluid leaks around the output shaft
• Protects transfer case internals from dirt and debris contamination
• Maintains proper lubrication by sealing fluid within the transfer case
• Reduces risk of transfer case damage due to fluid loss
• Helps maintain smooth drivetrain operation and performance

Installation Notes and Tips

• Ensure the transfer case output shaft and housing bore are clean and free of debris before installation
• Use appropriate tools to press the seal evenly into the housing bore without distortion
• Verify the seal orientation matches manufacturer specifications to ensure proper sealing
• Inspect the shaft for wear or damage that could compromise seal performance
• 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 strict industry standards for durability and performance. The fluoro-elastomer material provides resistance to heat, oil, and chemical exposure commonly encountered in automotive transfer case environments. Part number 710682 is backed by National's quality assurance processes to ensure consistent fit and function. Please refer to National's warranty policy for specific coverage details.