National 225220 Wheel Seal - Front Outer, Rear Inner or Rear Outer

National 225220 Wheel Seal Overview

The National 225220 wheel seal is engineered for reliable driveline protection in select Chevrolet, Lexus, Mazda, Porsche, and Toyota vehicles. Designed with precision dimensions and durable nitrile material, this oil seal helps maintain optimal axle performance and prevent fluid leaks.

• Inside diameter: 2.047 inches (52.000 mm)
• Outside diameter: 2.688 inches (68.280 mm)
• Housing bore: 2.677 inches (68.000 mm)
• Width: 0.315 inches (8.000 mm)
• Material: Nitrile rubber for enhanced oil resistance
• Part type: Wheel seal (oil seal), Series 220000, Type 32

Detailed Product Description

The National 225220 wheel seal is a precision-engineered oil seal designed to fit shafts with an inside diameter of 2.047 inches (52 mm) and housings with a bore diameter of approximately 2.677 inches (68 mm). Constructed from nitrile, a synthetic rubber known for its resistance to oil, heat, and wear, this seal provides a reliable barrier against contaminants and fluid leakage in driveline and axle assemblies. The 0.315-inch (8 mm) width ensures a secure fit within the housing bore, maintaining proper sealing pressure during operation.

This wheel seal is compatible with a range of vehicles including Chevrolet models like the Nova and 323, Lexus ES250, Mazda 323, Porsche 911, and Toyota models such as Camry, Celica, Corolla, MR2, and RAV4. The part number 225220 corresponds to the National brand’s Series 220000, Type 32 oil seal, designed specifically for these applications.

Common Applications and Problem Solving

• Prevents axle oil leaks that can cause driveline damage
• Protects wheel bearings from dirt and moisture intrusion
• Maintains proper lubrication within the axle assembly
• Reduces risk of premature wear on axle shafts and bearings
• 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
• Use appropriate tools to press the seal evenly into the housing bore without distortion
• Check the seal orientation; the lip should face the lubricant side to prevent leaks
• Inspect the shaft for wear or damage that could compromise the seal’s effectiveness
• Apply a light coating of compatible lubricant on the seal lip before installation

Quality Assurance and Warranty

National wheel seals are manufactured to meet industry standards for durability and performance. The 225220 part undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details may vary, National typically offers coverage against manufacturing defects to support long-term reliability in Chevrolet, Lexus, Mazda, Porsche, and Toyota driveline applications.