National 370150A Wheel Seal - Front Inner

Overview of National 370150A Wheel Seal

The National 370150A wheel seal is engineered for reliable driveline protection, designed to maintain optimal oil bath sealing performance. Constructed from durable nitrile material, this wheel seal supports precise fitment for vehicles requiring a 3.875 inch housing bore and a 2.875 inch shaft diameter.

• Part Number: 370150A
• Material: Nitrile for enhanced oil resistance
• Outside Diameter: 3.885 inches (98.78 mm)
• Housing Bore Diameter: 3.875 inches (98.43 mm)
• Shaft Diameter: 2.875 inches (73.03 mm)
• Width: 0.700 inches (17.78 mm)
• Installation Tool Recommended: RD272
• Type: 07 oil bath seal

Detailed Product Description

The National 370150A wheel seal is part of the 370000 series, designed specifically for driveline and axle applications requiring precise sealing to prevent lubricant leakage and contamination ingress. Its nitrile composition offers resistance to oil and heat, ensuring durability under typical operating conditions. The seal’s dimensions, including a 3.885 inch outside diameter and 0.700 inch width, provide a secure fit within the housing bore of 3.875 inches, accommodating shafts measuring 2.875 inches in diameter. This seal is suitable for use in various automotive makes and models that specify these dimensions, including certain Ford and Chevrolet vehicles known to require this size for axle and driveline maintenance.

Common Applications and Problem Solving

• Prevents oil leaks in wheel hubs and axle assemblies
• Protects driveline components from dirt and debris contamination
• Maintains proper lubrication within oil bath systems
• Reduces wear on axle shafts by maintaining seal integrity
• Addresses common seal failure issues in Ford and Chevrolet axle assemblies

Installation Notes and Tips

For optimal installation of the National 370150A wheel seal, use the RD272 installation tool to ensure even seating and prevent damage to the seal lip. Clean the housing bore thoroughly before installation to remove any debris or old sealant. Verify shaft and bore dimensions to confirm compatibility. Avoid excessive force during installation to maintain the integrity of the nitrile material and ensure a proper seal.

Quality Assurance and Warranty

National wheel seals are manufactured to meet industry standards for durability and performance. The 370150A part undergoes rigorous quality control to ensure dimensional accuracy and material consistency. While specific warranty details are not provided, National products typically come with manufacturer-backed quality assurance to support reliable service life in automotive driveline applications.