National 710784 Axle Differential Seal - Rear

Overview of National 710784 Axle Differential Seal

The National 710784 axle differential seal is engineered for reliable sealing performance in driveline applications. Designed specifically for select Lexus and Toyota models, this oil seal helps maintain optimal differential function by preventing fluid leaks and contamination.

• Material: Durable polyacrylate for enhanced wear resistance
• Inside Diameter: 1.850 inches (47.000 mm)
• Outside Diameter: 2.843 inches (72.200 mm)
• Thickness: 0.392 inches (10.000 mm)
• Bi-directional lip design for effective sealing under varying rotational directions
• Overall width with side lip: 0.433 inches (11.000 mm)
• Compatible with housing bore size of approximately 2.835 inches (72.000 mm)

Detailed Product Description

The National 710784 axle differential seal is constructed from polyacrylate, a material known for its resistance to heat, oil, and wear, making it suitable for demanding automotive environments. Its bi-directional lip design ensures a secure seal around the axle shaft, accommodating rotational forces in both directions. With precise dimensions including a 1.850-inch inside diameter and a 2.843-inch outside diameter, this seal fits tightly within the differential housing bore of 2.835 inches, minimizing the risk of leaks. The 0.392-inch thickness and 0.433-inch overall width with side lip provide additional sealing surface area to maintain differential fluid integrity.

Compatible Vehicles and Applications

This axle differential seal is compatible with a range of Lexus and Toyota vehicles, including the Lexus GS300, GS400, GS430, LS400, LS430, LX470, SC300, SC400, SC430, and the Toyota Supra. The part number 710784 corresponds to the National 710700 series, designed specifically for these models' driveline and axle sealing requirements.

Common Issues Addressed by the National 710784 Seal

• Prevents differential fluid leaks that can lead to lubrication failure
• Protects internal differential components from dirt and debris contamination
• Reduces wear on axle shafts by maintaining proper lubrication
• Helps avoid costly differential repairs due to seal failure
• Maintains optimal driveline performance and vehicle reliability

Installation Notes and Tips

• Ensure the differential housing bore is clean and free of debris before installation
• Verify the seal dimensions match the axle shaft and housing bore measurements
• Use appropriate tools to press the seal evenly into the housing to avoid damage
• Inspect the axle shaft for wear or damage prior to seal installation
• Apply a light coating of differential fluid on the seal lip to facilitate installation and initial lubrication

Quality Assurance and Warranty

National axle differential seals are manufactured to meet OEM specifications for fit and function. The 710784 seal undergoes rigorous quality control to ensure durability and reliable sealing performance. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in product quality.