National 710218 Axle Differential Seal - Rear

Overview of National 710218 Axle Differential Seal

The National 710218 axle differential seal is engineered to provide reliable sealing performance for various Mazda models. Designed with precision dimensions and durable fluoro-elastomer material, this oil seal helps maintain optimal driveline function by preventing fluid leaks and contamination.

• Inside diameter: 1.378 inches (35.000 mm)
• Outside diameter: 2.209 inches (56.100 mm)
• Flanged outside diameter: 2.500 inches (63.500 mm)
• Thickness/width: 0.630 inches (16.000 mm)
• Material: Fluoro-elastomer for enhanced chemical and temperature resistance
• Housing bore diameter: 2.205 inches (56.000 mm)
• Compatible with Mazda 323, CX-7, CX-9, Miata, MX-5 Miata, Protege, and RX-7

Technical Details and Specifications

This National axle differential seal (part number 710218) belongs to the 710200 series and is designed specifically for driveline and axle applications requiring precise sealing solutions. The fluoro-elastomer construction offers resistance to heat, oil, and other automotive fluids, ensuring durability under demanding operating conditions. The seal’s dimensions, including a 1.378-inch shaft diameter and 2.209-inch outside diameter, match the OEM specifications for a secure fit within the differential housing bore of 2.205 inches.

Compatible Mazda Models and Applications

The 710218 axle differential seal is compatible with a range of Mazda vehicles, including the Mazda 323, CX-7, CX-9, Miata, MX-5 Miata, Protege, and RX-7. This compatibility ensures that the seal meets the specific requirements of these models’ driveline systems, providing effective sealing to prevent leaks and maintain differential performance.

Common Issues Addressed by the Axle Differential Seal

• Prevents differential oil leaks that can lead to driveline damage
• Protects against contamination from dirt and debris entering the axle assembly
• Maintains proper lubrication within the differential for smooth operation
• Reduces wear on axle components by preserving fluid integrity
• Helps avoid costly repairs related to seal failure or fluid loss

Installation Notes and Tips

When installing the National 710218 axle differential seal, ensure the housing bore and shaft surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the fluoro-elastomer material. Verify the seal orientation matches OEM specifications to maintain proper sealing function. It is recommended to inspect related components such as bearings and shafts during installation for any signs of wear.

Quality Assurance and Warranty

National manufactures the 710218 axle differential seal to meet industry standards for durability and performance. The fluoro-elastomer material is selected for its resistance to heat and automotive fluids, contributing to long service life. While specific warranty details may vary, National products typically come with a limited warranty against manufacturing defects, providing confidence in the product’s reliability.