National 8549S Wheel Seal - Rear Outer

National 8549S Wheel Seal for Jeep Driveline Systems

The National 8549S wheel seal is engineered to provide reliable sealing performance for Jeep CJ5, CJ7, Grand Wagoneer, and Scrambler models. Designed with durable nitrile material, this oil seal helps maintain driveline integrity by preventing lubricant leaks and contamination.

• Inside diameter: 1.360 inches (34.530 mm)
• Outside diameter: 2.328 inches (59.130 mm)
• Flanged outside diameter: 4.560 inches (115.800 mm)
• Overall width with side lip: 0.492 inches (12.500 mm)
• Width: 0.323 inches (8.200 mm)
• Material: Nitrile for enhanced resistance to oil and wear
• Part number: 8549S

Technical Details and Specifications

This National 8549S wheel seal belongs to the 8000 series and is specifically designed for use in Jeep driveline and axle applications. The seal features a precise fit with a 1.360-inch shaft diameter and a housing bore diameter of 4.560 inches, ensuring proper sealing around the axle shaft. The nitrile construction offers resistance to oil, grease, and other automotive fluids, making it suitable for demanding operating conditions. The flanged outside diameter and side lip design provide additional sealing security to prevent leakage and contamination.

Compatible Jeep Models and Applications

This wheel seal is compatible with the following Jeep models:

• Jeep CJ5
• Jeep CJ7
• Jeep Grand Wagoneer
• Jeep Scrambler

It is intended for use in driveline and axle sealing systems where maintaining oil containment and preventing dirt ingress is critical for vehicle performance and longevity.

Common Issues Addressed by the National 8549S Wheel Seal

• Prevents oil leaks from axle shafts
• Protects driveline components from dirt and debris contamination
• Reduces wear caused by lubricant loss
• Maintains proper lubrication within the axle housing
• Helps avoid costly driveline repairs due to seal failure

Installation Notes and Tips

When installing the National 8549S wheel seal, ensure the sealing surface and shaft are clean and free of debris. Use appropriate tools to press the seal evenly into the housing bore without damaging the sealing lip. Verify the seal orientation matches the original part to maintain proper oil retention. Lubricate the seal lip lightly with clean oil before installation to reduce initial wear.

Quality Assurance and Warranty

National wheel seals are manufactured to meet industry standards for durability and performance. The 8549S part is made from high-quality nitrile material designed to withstand typical automotive operating conditions. While specific warranty details may vary, National products generally come with a limited warranty against manufacturing defects to ensure customer confidence in product reliability.