National 471831 Wheel Seal - Front Inner or Rear

Overview of National 471831 Wheel Seal

The National 471831 wheel seal is engineered to provide reliable sealing performance for driveline and axle applications. Designed with precision, this oil seal helps maintain proper lubrication and prevents contaminants from entering the wheel hub assembly.

• Inside diameter: 1.750 inches (44.450 mm)
• Outside diameter: 2.445 inches (62.100 mm)
• Housing bore: 2.441 inches (62.000 mm)
• Width: 0.375 inches (9.530 mm)
• Material: Durable nitrile compound
• Redicoat coating for enhanced corrosion resistance
• Part of the National 470000 series
• Type 47 oil seal designed for axle and driveline use

Detailed Product Description

The National 471831 wheel seal is manufactured from nitrile, a material known for its resistance to oil, heat, and wear, making it suitable for demanding automotive environments. The seal features a Redicoat finish that provides additional protection against corrosion, extending the service life of the component. With an inside diameter of 1.750 inches and an outside diameter of 2.445 inches, this seal fits shafts and housings with corresponding dimensions, ensuring a tight and secure fit. The 0.375-inch width balances durability with compact design, making it compatible with various axle and driveline assemblies.

Applications and Problem Solving

This wheel seal is commonly used in automotive driveline and axle systems to address several issues:

• Prevents oil leaks from wheel hubs and axle assemblies
• Protects bearings and internal components from dirt and moisture
• Maintains lubrication integrity under high temperature and pressure
• Reduces wear caused by contaminants entering the seal area
• Helps avoid costly repairs due to seal failure or axle damage

Installation Notes and Tips

• Ensure shaft and housing surfaces are clean and free of debris before installation
• Use proper tools to avoid damaging the seal lip or body during installation
• Verify the seal orientation matches the oil retention side facing the lubricant
• Check dimensions carefully to confirm compatibility with your vehicle’s axle or driveline
• Lubricate the seal lip lightly with clean oil to ease installation and prevent dry running

Quality Assurance and Warranty

National wheel seals, including part number 471831, are manufactured to meet industry standards for durability and performance. The use of nitrile material and Redicoat corrosion protection ensures consistent sealing under typical automotive operating conditions. While specific warranty details may vary, National products generally come with a limited warranty against manufacturing defects, providing confidence in the product’s reliability.