National 100716V Differential Pinion Seal - Front Outer

Overview of National Differential Pinion Seal 100716V

The National 100716V differential pinion seal is engineered for reliable sealing performance in Ford F-250 Super Duty and F-350 Super Duty models. Designed with precision dimensions and durable materials, this oil seal helps maintain drivetrain integrity by preventing fluid leaks.

• Flanged outside diameter: 3.425 inches (87.0 mm)
• Housing bore diameter: 3.161 inches (80.3 mm)
• Outside diameter: 3.169 inches (80.5 mm)
• Overall width with side lip: 0.693 inches (17.6 mm)
• Shaft diameter: 1.874 inches (47.6 mm)
• Material: Fluoro-elastomer for enhanced chemical and temperature resistance
• Helix type: Counter-clockwise spiral lip design for effective sealing
• Width: 0.551 inches (14.0 mm)

Technical Description and Material Details

The National 100716V 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 improves sealing efficiency by directing contaminants away from the shaft interface. Its flanged outside diameter of 3.425 inches (87 mm) and housing bore of 3.161 inches (80.3 mm) provide a secure fit within the differential housing, while the shaft diameter of 1.874 inches (47.6 mm) matches the pinion shaft specifications of compatible Ford Super Duty models.

Compatible Vehicles and Applications

This differential pinion seal is specifically compatible with Ford F-250 Super Duty and F-350 Super Duty trucks. It is designed to replace worn or damaged seals in the driveline and axle assembly, helping to maintain proper lubrication and prevent contamination.

• Prevents oil leaks from the differential pinion shaft
• Reduces risk of drivetrain component damage due to fluid loss
• Helps maintain optimal differential performance and longevity
• Protects against dirt and debris ingress into the differential housing
• Addresses common seal wear issues in heavy-duty Ford trucks

Installation Notes and Tips

When installing the National 100716V 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. Use appropriate tools to press the seal evenly into the housing bore without distortion. Verify the counter-clockwise spiral lip orientation matches the shaft rotation direction for effective sealing.

Quality Assurance and Warranty

National manufactures the 100716V differential pinion seal to meet industry standards for durability and performance. The use of fluoro-elastomer material and precise dimensional tolerances contribute to consistent sealing reliability. Warranty information is provided by National and should be referenced for specific coverage details.