National 370024A Wheel Seal - Rear

National 370024A Wheel Seal Overview

The National 370024A wheel seal is engineered to provide reliable sealing performance for driveline and axle applications. Designed with precision dimensions and durable nitrile material, this oil bath seal helps maintain optimal lubrication and prevent contamination in compatible vehicle models.

• Part Number: 370024A
• Material: Nitrile for enhanced resistance to oil and wear
• Outside Diameter: 5.515 inches (140.080 mm)
• Housing Bore Diameter: 5.501 inches (139.730 mm)
• Shaft Diameter: 3.875 inches (98.430 mm)
• Width: 0.875 inches (22.230 mm)
• Installation Tool: RD280 recommended
• Type: 11 oil bath seal

Detailed Product Description

The National 370024A wheel seal is part of the 370000 series, designed specifically for oil bath sealing applications in driveline and axle assemblies. Constructed from nitrile, this seal offers durability and resistance to oil degradation, ensuring a long service life. The precise outside diameter of 5.515 inches and housing bore of 5.501 inches provide a secure fit to prevent leaks and contamination. With a shaft diameter of 3.875 inches and a width of 0.875 inches, this seal is engineered to maintain proper lubrication around the axle shaft, reducing wear and extending component life.

Common Applications and Issues Addressed

• Prevents oil leaks in axle assemblies
• Protects driveline components from dirt and debris
• Maintains lubrication integrity in wheel hubs
• Reduces premature wear of axle shafts and bearings
• Helps avoid costly repairs due to seal failure

Installation Notes and Tips

For proper installation of the National 370024A wheel seal, use the RD280 installation tool to ensure even seating and avoid damage to the seal lip. Clean the housing bore and shaft thoroughly before installation to remove any debris or old sealant. Verify the seal orientation matches the oil bath design to maintain effective sealing performance. Inspect the shaft for wear or damage prior to installation to prevent premature seal failure.

Quality Assurance and Warranty

National wheel seals are manufactured to meet industry standards for durability and performance. The 370024A seal undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details are not provided, National products are generally backed by the brand's commitment to quality and reliability in automotive sealing solutions.