National 710687 Axle Output Shaft Seal - Front Left

Overview of National 710687 Axle Output Shaft Seal

The National 710687 axle output shaft seal is engineered to provide reliable sealing performance for driveline components. Designed with a bi-directional lip design and constructed from durable polyacrylate material, this oil seal is compatible with various GM and Isuzu vehicles, including Chevrolet Blazer and GMC Envoy models.

• Material: Polyacrylate for enhanced durability and resistance
• Bi-directional lip design for effective sealing in both rotational directions
• Inside diameter: 1.575 inches (40.000 mm)
• Outside diameter: 2.957 inches (75.100 mm)
• Thickness: 0.591 inches (15.000 mm)
• Overall width with side lip: 0.803 inches (20.400 mm)
• Housing bore diameter: 2.953 inches (75.000 mm)
• Part number: 710687, part of the 710600 series

Detailed Product Description

The National 710687 axle output shaft seal is designed to maintain the integrity of the axle assembly by preventing oil leaks and contamination ingress. Its polyacrylate construction offers resistance to heat, wear, and chemical exposure commonly encountered in driveline environments. The bi-directional lip design ensures effective sealing regardless of shaft rotation direction, making it suitable for a range of axle configurations. With precise dimensions including a 1.575-inch inside diameter and a 2.957-inch outside diameter, this seal fits securely within the housing bore of 2.953 inches, ensuring a tight and reliable fit.

Compatible Vehicles and Applications

This axle output shaft seal is compatible with multiple makes and models, including Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Saab. It is specifically designed for use in vehicles such as the Chevrolet Blazer, GMC Envoy, Isuzu Ascender, and others within the driveline and axle systems.

• Prevents oil leaks in axle output shafts
• Protects driveline components from dirt and debris
• Reduces wear on axle shafts and bearings
• Maintains proper lubrication within axle assemblies
• Helps avoid costly driveline repairs due to seal failure

Installation Notes and Tips

When installing the National 710687 axle output shaft seal, ensure the housing bore and shaft surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into the housing bore without damaging the sealing lips. Verify the seal orientation matches the bi-directional lip design for optimal performance. Lubricate the seal lip lightly with compatible oil before installation to reduce initial wear.

Quality Assurance and Warranty

National manufactures the 710687 axle output shaft seal to meet industry standards for durability and performance. The polyacrylate material and precise engineering contribute to a reliable sealing solution for driveline applications. This product is part of the 710600 series, known for consistent quality. Warranty coverage details should be confirmed with the original equipment manufacturer or distributor.