National 710493 Drive Axle Shaft Seal - Front Outer

Overview of National Drive Axle Shaft Seal 710493

The National Drive Axle Shaft Seal 710493 is engineered for reliable sealing performance in Ford Excursion, F-250 Super Duty, and F-350 Super Duty vehicles. Constructed from durable polyacrylate material, this oil seal is designed to maintain axle integrity and prevent fluid leaks under demanding conditions.

• Material: Polyacrylate for enhanced durability and resistance
• Inside Diameter: 2.874 inches (72.990 mm)
• Outside Diameter: 4.470 inches (113.550 mm)
• Thickness: 0.827 inches (21.000 mm)
• Overall Width with Side Lip: 1.163 inches (29.550 mm)
• Housing Bore Diameter: 4.448 inches (113.000 mm)
• Part Number: 710493, Series 710400

Detailed Product Description

This drive axle shaft seal from National is specifically designed to fit Ford Excursion, F-250 Super Duty, and F-350 Super Duty models. The polyacrylate construction offers excellent resistance to heat, oil, and wear, ensuring a long service life. With precise dimensions including a 2.874-inch inside diameter and a 4.470-inch outside diameter, the seal fits securely within the axle housing bore of 4.448 inches. The overall width of 0.827 inches, extended to 1.163 inches with the side lip, provides a tight seal to prevent oil leakage and contamination.

Common Applications and Problem Solving

• Prevents oil leaks from the drive axle shaft
• Protects axle components from dirt and debris intrusion
• Maintains proper lubrication within the axle assembly
• Reduces wear on axle shaft bearings and seals
• Helps avoid costly drivetrain repairs due to seal failure

Installation Notes and Tips

• Ensure the axle 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 damage
• Verify the seal orientation matches the original part to maintain proper sealing function
• Check for any signs of wear or damage on the axle shaft before installing the new seal

Quality Assurance and Warranty

National manufactures this drive axle shaft seal to meet OEM specifications for Ford Excursion, F-250 Super Duty, and F-350 Super Duty vehicles. The polyacrylate material and precise engineering ensure consistent performance and durability. While specific warranty details may vary, National products typically come with a limited warranty against defects in material and workmanship, providing confidence in the product's reliability.