National 410825 Wheel Seal - Rear Inner

National 410825 Wheel Seal Overview

The National 410825 wheel seal is engineered to provide reliable sealing performance for driveline and axle applications. Designed with precision dimensions and durable nitrile material, this oil seal helps maintain optimal lubrication and prevent contamination in vehicle wheel hubs.

• Inside diameter: 2.375 inches (60.330 mm)
• Outside diameter: 3.628 inches (92.150 mm)
• Width: 0.375 inches (9.530 mm)
• Material: Nitrile rubber for resistance to oil and wear
• Redicoat coating for enhanced corrosion protection
• Housing bore: 3.623 inches (92.020 mm)
• Series: 410000, Type 41 oil seal
• Zero duplication part ensuring unique fitment

Detailed Product Description

The National 410825 wheel seal is part of the 410000 series, designed specifically for axle and driveline sealing systems. Constructed from nitrile, this seal offers excellent resistance to petroleum-based oils and greases, making it suitable for heavy-duty automotive applications. The precise inside diameter of 2.375 inches and outside diameter of 3.628 inches ensure a secure fit on compatible shafts and housings. The Redicoat finish provides additional protection against corrosion, extending the service life of the seal in harsh environments.

Applications and Problem Solving

This wheel seal is commonly used in vehicles requiring reliable axle sealing to prevent lubricant leakage and contamination ingress. It is compatible with various makes and models that utilize a 2.375-inch shaft diameter and a housing bore near 3.623 inches. The National 410825 addresses issues such as:

• Preventing oil leaks from wheel hubs and axle assemblies
• Protecting bearings from dirt, dust, and moisture intrusion
• Reducing wear and tear on driveline components
• Maintaining proper lubrication levels for extended component life

Installation Notes and Tips

When installing the National 410825 wheel seal, ensure the shaft and housing surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into the housing bore without damaging the sealing lip. Verify the seal orientation matches the oil seal design to maintain effective sealing. Lubricate the seal lip lightly with compatible grease or oil before installation to reduce initial wear.

Quality Assurance and Warranty

National wheel seals are manufactured to meet industry standards for durability and performance. The 410825 part number is a zero duplication part, ensuring precise fitment and consistent quality. While specific warranty details may vary, National typically backs their seals with a limited warranty against manufacturing defects, providing confidence in the product's reliability for automotive driveline applications.