National 7687S Wheel Seal - Rear Inner

Overview of National 7687S Wheel Seal for Jeep Vehicles

The National 7687S wheel seal is designed to provide reliable sealing performance for select Jeep models, including the CJ5, CJ7, Grand Wagoneer, and Scrambler. Engineered with nitrile material, this oil seal ensures durability and effective protection against contaminants and fluid leaks.

• Inside diameter: 1.378 inches (35.000 mm)
• Outside diameter: 2.513 inches (63.830 mm)
• Housing bore: 2.500 inches (63.500 mm)
• Width: 0.435 inches (11.050 mm)
• Material: Nitrile for resistance to oil and wear
• Part type: Wheel seal, oil seal design
• Series: 7000

Technical Details and Specifications

The National 7687S wheel seal features a precise fit with a 1.378-inch (35 mm) shaft diameter and a 2.513-inch (63.83 mm) outside diameter, making it compatible with the specified Jeep driveline components. The 0.435-inch (11.05 mm) width provides a secure sealing surface, while the nitrile construction offers resistance to oil, grease, and other automotive fluids. This seal is part of National's 7000 series, known for consistent quality in driveline and axle sealing applications.

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 specifically designed to maintain proper sealing in the wheel hub assembly, preventing oil leaks and contamination in these classic Jeep driveline systems.

Common Issues Addressed by National 7687S Wheel Seal

• Prevents oil and grease leakage from wheel hubs
• Protects axle bearings from dirt and moisture intrusion
• Reduces wear caused by contaminants in the driveline
• Maintains proper lubrication within the axle assembly
• Helps avoid premature bearing failure and costly repairs

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 damage
• Verify the seal lip is properly oriented toward the lubricant side
• Check for correct fitment with the 1.378-inch shaft diameter and 2.500-inch housing bore
• Inspect the seal after installation for any signs of misalignment or damage

Quality Assurance and Warranty Information

The National 7687S wheel seal is manufactured to meet industry standards for durability and performance. Constructed from nitrile material, it offers resistance to oil and wear, ensuring long service life in demanding automotive environments. While specific warranty details may vary, National products typically come with a limited warranty against manufacturing defects. For precise warranty terms, consult the product documentation or manufacturer.