National 710989 Drive Axle Shaft Seal - Front

Overview of National 710989 Drive Axle Shaft Seal

The National 710989 drive axle shaft seal is engineered for reliable sealing performance in Ram 1500 and 1500 Classic models. Constructed from durable polyacrylate material, this oil seal is designed to maintain axle integrity and prevent fluid leaks under demanding conditions.

• Material: Polyacrylate for enhanced durability and resistance
• Inside Diameter: 1.496 inches (38.000 mm)
• Outside Diameter: 2.961 inches (75.200 mm)
• Thickness: 0.315 inches (8.000 mm)
• Bi-directional lip design for effective sealing
• Overall width with side lip: 0.512 inches (13.000 mm)
• Compatible housing bore diameter: 2.953 inches (75.000 mm)

Detailed Product Description

The National 710989 drive axle shaft seal features a bi-directional lip design that provides a secure seal around the axle shaft, minimizing the risk of oil leakage and contamination ingress. Its polyacrylate construction offers resistance to heat, wear, and chemical exposure, making it suitable for the driveline environment of Ram 1500 and 1500 Classic vehicles. The seal’s precise dimensions, including an inside diameter of 1.496 inches and an outside diameter of 2.961 inches, ensure a proper fit within the axle housing bore of approximately 2.953 inches. The overall width with side lip measures 0.512 inches, contributing to a tight and reliable seal.

Applications and Problem Solving

• Prevents oil leaks from the drive axle shaft area
• Protects axle components from dirt and debris contamination
• Maintains proper lubrication within the axle assembly
• Reduces wear on axle bearings and related parts
• Helps avoid driveline noise caused by seal failure

Installation Notes and Tips

When installing the National 710989 drive axle shaft seal, ensure the axle shaft and housing bore 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 bi-directional lip design for optimal performance. Avoid using excessive force during installation to prevent seal distortion.

Quality Assurance and Warranty

National drive axle shaft seals are manufactured to meet industry standards for durability and performance. The 710989 part number is part of the 710900 series, known for consistent quality in driveline sealing applications. While specific warranty details are not provided, National products typically adhere to strict quality control processes to ensure reliability in Ram 1500 and 1500 Classic vehicles.