National 470682 Transfer Case Output Shaft Seal - Front or Rear Rearward

Overview of National Transfer Case Output Shaft Seal 470682

The National 470682 transfer case output shaft seal is engineered to provide reliable sealing performance for select Chevrolet, Dodge, Ford, and GMC trucks. Designed specifically for models like the Chevrolet K3500 and Ford F-100, this oil seal helps maintain transfer case integrity by preventing fluid leaks and contamination.

• Inside diameter: 1.562 inches (39.670 mm)
• Outside diameter: 2.627 inches (66.730 mm)
• Thickness/width: 0.312 inches (7.920 mm)
• Sealing material: durable nitrile compound
• Redicoat surface treatment for enhanced wear resistance
• Compatible housing bore: 2.623 inches (66.620 mm)
• Part number: 470682, series 470000

Technical Details and Material Specifications

This transfer case output shaft seal from National is constructed from nitrile, a synthetic rubber known for its resistance to oil, heat, and abrasion. The seal features a Redicoat coating that improves durability and reduces friction during operation. With precise dimensions including a 1.562-inch inside diameter and a 2.627-inch outside diameter, it fits securely within the housing bore of 2.623 inches, ensuring a tight seal around the output shaft. The 0.312-inch thickness provides adequate sealing surface to prevent fluid leakage under typical operating conditions.

Compatible Vehicles and Applications

The National 470682 seal is compatible with transfer cases on various truck models, including Chevrolet K3500, Dodge W350, Ford F-100, and GMC V3500. It is designed for use in transfer case output shafts where maintaining fluid containment is critical for drivetrain performance and longevity.

• Prevents transfer case fluid leaks
• Protects against dirt and debris ingress
• Maintains proper lubrication of output shaft
• Reduces risk of transfer case damage due to contamination
• Supports smooth drivetrain operation

Installation Notes and Tips

When installing the National 470682 transfer case output shaft seal, ensure the housing bore and shaft surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into the bore without distortion. Verify the seal orientation matches the original part to maintain proper sealing function. Lubricate the sealing lip lightly with transfer case fluid before installation to reduce initial wear.

Quality Assurance and Warranty Information

National manufactures the 470682 seal to meet OEM specifications, ensuring reliable fit and function. The part is a zero duplication item, guaranteeing authenticity and quality. While specific warranty details may vary, National typically backs their sealing products with limited warranties against manufacturing defects, providing confidence in durability and performance.