National 710920 Differential Pinion Seal - Front Outer

Overview of National 710920 Differential Pinion Seal

The National 710920 differential pinion seal is engineered to provide reliable sealing performance for driveline components. Designed specifically for select INFINITI and Nissan models, this oil seal helps maintain optimal differential function by preventing fluid leaks and contamination.

• Inside diameter: 1.890 inches (48.000 mm)
• Outside diameter: 3.358 inches (85.300 mm)
• Flanged outside diameter: 3.622 inches (92.000 mm)
• Thickness: 0.531 inches (13.500 mm)
• Material: Durable fluoro-elastomer for enhanced chemical and heat resistance
• Helix type: Counter-clockwise spiral lip design for effective sealing
• Overall width with side lip: 0.670 inches (17.000 mm)
• Housing bore compatibility: 3.346 inches (85.000 mm)

Technical Details and Material Specifications

The National 710920 differential pinion seal is constructed from fluoro-elastomer, a material known for its resistance to heat, oil, and chemical degradation. This ensures long-lasting performance in demanding driveline environments. The seal features a counter-clockwise spiral lip design that enhances sealing efficiency by directing contaminants away from the shaft interface. With precise dimensions including a 1.890-inch inside diameter and a 3.358-inch outside diameter, this seal fits securely within the housing bore of 3.346 inches, providing a tight, leak-resistant fit.

Compatible Vehicles and Applications

This differential pinion seal is compatible with various INFINITI and Nissan models, including the Armada, Pathfinder, QX56, and TITAN. It is designed to replace worn or damaged seals in the differential pinion area, helping to maintain proper lubrication and prevent fluid leaks that can lead to driveline damage.

• Prevents oil leaks in the differential pinion area
• Protects against dirt and debris contamination
• Maintains proper lubrication for differential gears
• Reduces risk of driveline component wear
• Ensures smooth operation of the differential assembly

Installation Notes and Tips

When installing the National 710920 differential pinion seal, ensure the housing bore and shaft surfaces are clean and free of debris. Proper alignment during installation is critical to avoid seal damage and ensure effective sealing. Use appropriate tools to press the seal evenly into the housing bore without distortion. Verify the seal’s orientation matches the counter-clockwise spiral lip design for optimal performance.

Quality Assurance and Warranty

National manufactures the 710920 differential pinion seal to meet industry standards for durability and performance. The use of fluoro-elastomer material provides resistance to harsh operating conditions commonly found in automotive driveline systems. While specific warranty details are not provided, National products typically adhere to strict quality control processes to ensure reliability in service.