National 1981 Wheel Seal - Front Inner or Rear

Reliable Wheel Seal for Ford, Jeep, Lexus, and More

The National 1981 wheel seal is engineered to provide dependable sealing performance for a variety of vehicles including Ford Explorer, Jeep Wrangler, Lexus IS300, and Toyota Tacoma. Designed with precision dimensions and durable nitrile material, this oil seal helps maintain driveline integrity and prevent leaks.

Key Features of National 1981 Wheel Seal

• Inside diameter: 1.181 inches (30.000 mm) for accurate shaft fitment
• Outside diameter: 1.781 inches (45.230 mm) to match housing bore
• Thickness/width: 0.315 inches (8.000 mm) for secure sealing
• Constructed from nitrile material for resistance to oil and wear
• Compatible with multiple makes and models including Ford, Jeep, Lexus, Mazda, Mercedes-Benz, Nissan, and Toyota

Detailed Description and Specifications

The National 1981 wheel seal is part of the 1000 series and is designed as an oil seal to protect driveline components by preventing lubricant leakage and contamination ingress. Its nitrile sealing material offers durability and chemical resistance, suitable for automotive applications where oil exposure is common. The seal’s precise inside diameter of 1.181 inches (30 mm) fits shafts accurately, while the outside diameter of 1.781 inches (45.230 mm) corresponds closely with the housing bore size of approximately 1.772 inches (45 mm). With a thickness of 0.315 inches (8 mm), this seal ensures a tight fit and reliable sealing performance in wheel hubs and axle assemblies.

Applications and Problem Solving

• Prevents oil leaks in wheel hubs and axle assemblies
• Protects driveline components from dirt and moisture contamination
• Reduces wear on shafts by maintaining proper lubrication
• Helps maintain vehicle driveline efficiency and longevity
• Compatible with vehicles such as Ford Explorer Sport Trac, Jeep Cherokee, Lexus IS300, and Toyota Tacoma

Installation Notes and Tips

• Ensure the housing bore and shaft are clean and free of debris before installation
• Use appropriate tools to press the seal evenly into the housing bore without distortion
• Verify the seal orientation matches the oil side to prevent leaks
• Check shaft surface for wear or damage prior to installation to ensure proper sealing

Quality Assurance and Warranty

National wheel seals are manufactured to meet industry standards for durability and performance. The 1981 part number 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 provide confidence in product reliability.