National 455858 Wheel Seal - Rear Inner

National 455858 Wheel Seal Overview

The National 455858 wheel seal is engineered to provide reliable sealing performance for driveline and axle applications. Designed with precision, this oil seal features nitrile material construction and specific dimensional attributes to ensure compatibility with various vehicle makes and models requiring a 3.437 inch shaft diameter.

• Inside diameter: 3.437 inches (87.3 mm)
• Outside diameter: 4.761 inches (120.93 mm)
• Width: 0.562 inches (14.27 mm)
• Material: Durable nitrile rubber for oil resistance
• Redicoat coating for enhanced corrosion protection
• Housing bore: 4.756 inches (120.8 mm)
• Series: 450000
• Type: 45

Detailed Product Description

The National 455858 wheel seal is a high-quality oil seal designed to maintain effective sealing in driveline and axle assemblies. Constructed from nitrile, this seal offers resistance to oil and other automotive fluids, ensuring long-lasting durability. The precise inside diameter of 3.437 inches (87.3 mm) and outside diameter of 4.761 inches (120.93 mm) make it suitable for applications requiring these exact dimensions. The 0.562 inch (14.27 mm) width and Redicoat corrosion-resistant coating further enhance the seal's performance in harsh operating environments. This part is part of National's 450000 series, known for consistent quality and fitment accuracy.

Common Applications and Issues Addressed

• Prevents oil leaks in wheel hubs and axle assemblies
• Protects bearings from contamination by dirt and moisture
• Maintains proper lubrication within driveline components
• Reduces wear caused by fluid leakage and environmental exposure
• Helps avoid costly repairs related to seal failure

Installation Notes and Tips

• Ensure the shaft and housing bore are clean and free of debris before installation
• Verify the shaft diameter matches the 3.437 inch specification for proper fit
• Use appropriate tools to avoid damaging the seal during installation
• Apply a light coat of lubricant on the seal lip to facilitate smooth installation
• Check for proper seating to prevent leaks and premature wear

Quality Assurance and Warranty

National wheel seals, including part number 455858, are manufactured to meet stringent industry standards for durability and performance. The use of nitrile material and Redicoat coating ensures resistance to oil and corrosion. While specific warranty details may vary, National products typically come with a limited warranty against manufacturing defects, providing confidence in the product's reliability for automotive driveline and axle sealing needs.