National 370211A Wheel Seal - Front Inner

National 370211A Wheel Seal Overview

The National 370211A wheel seal is engineered for reliable sealing performance in driveline and axle applications. Designed as an oil bath seal with a spindle mount, this wheel seal is suitable for vehicles requiring precise fitment and durable sealing solutions.

• Part Number: 370211A
• Type: 11 oil bath wheel seal
• Material: Polyacrylate for enhanced durability
• Outside Diameter: 120.35 mm (4.738 inches)
• Housing Bore: 120.02 mm (4.725 inches)
• Shaft Diameter: 74.88 mm (2.948 inches)
• Width: 13.36 mm (0.585 inches)
• Installation Tool: Rd316 recommended
• Spindle mount design for secure fitment

Detailed Product Description

The National 370211A wheel seal is part of the 370000 series, designed specifically for oil bath sealing applications in automotive driveline and axle systems. Constructed from polyacrylate material, this seal offers resistance to wear and chemical degradation, ensuring long service life. The precise dimensions, including an outside diameter of 120.35 mm and a housing bore of 120.02 mm, provide a tight fit to prevent lubricant leakage and contamination ingress. The spindle mount design facilitates proper alignment and installation on compatible axle shafts with a diameter of 74.88 mm.

Applications and Problem Solving

• Prevents oil leaks in wheel hubs and axle assemblies
• Protects bearings from dirt and moisture contamination
• Maintains proper lubrication in oil bath environments
• Reduces wear on axle components by maintaining seal integrity
• Compatible with vehicles requiring a 4.725 inch housing bore and 2.948 inch shaft diameter

Installation Notes and Tips

For optimal installation of the National 370211A wheel seal, use the Rd316 installation tool to ensure even seating and avoid damage to the seal lip. Verify the housing bore and shaft dimensions match the seal specifications before installation. Clean the spindle and housing bore thoroughly to remove debris and old lubricant. Proper installation will help maintain seal performance and extend axle component life.

Quality Assurance and Warranty

National wheel seals are manufactured to meet industry standards for durability and performance. The 370211A seal undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details are not provided, National products typically adhere to OEM quality requirements, offering reliable sealing solutions for automotive driveline applications.