National 710412 Power Steering Pump Shaft Seal

Overview of National Power Steering Pump Shaft Seal 710412

The National 710412 power steering pump shaft seal is engineered to provide reliable sealing performance for various Toyota, Lexus, Chevrolet, and Geo models. Designed with precision dimensions and durable nitrile material, this oil seal helps maintain system integrity and prevent fluid leaks in power steering pumps.

• Inside diameter: 0.709 inch (18.0 mm)
• Outside diameter: 1.346 inch (34.2 mm)
• Thickness/width: 0.315 inch (8.0 mm)
• Material: Nitrile for resistance to oil and wear
• Compatible with multiple Toyota, Lexus, Chevrolet, and Geo models
• Part number: 710412, series 710400

Detailed Product Description and Specifications

This National power steering pump shaft seal (part number 710412) is manufactured from nitrile, a synthetic rubber known for its excellent resistance to petroleum-based fluids and mechanical wear. The seal features an inside diameter of 0.709 inch (18.0 mm) and an outside diameter of 1.346 inch (34.2 mm), with a thickness of 0.315 inch (8.0 mm). These precise dimensions ensure a secure fit within the housing bore, which measures approximately 1.339 inch (34.0 mm). The seal is designed to maintain a tight barrier around the power steering pump shaft, preventing oil leaks and contamination that can compromise steering performance.

Compatible Vehicle Applications

This power steering pump shaft seal is compatible with a range of vehicles, including:

• Toyota 4Runner, Avalon, Camry, Corolla, Land Cruiser, Sequoia, Sienna, T100, Tacoma, Tundra
• Lexus ES300, LX470, RX300
• Chevrolet Prizm
• Geo Prizm

Using the correct seal for these models helps maintain proper power steering function and extends the life of the pump assembly.

Common Issues Addressed by This Seal

• Prevents power steering fluid leaks around the pump shaft
• Reduces contamination ingress that can damage pump components
• Maintains hydraulic pressure for consistent steering response
• Minimizes premature wear of the power steering pump shaft
• Helps avoid costly repairs related to fluid loss and pump failure

Installation Notes and Tips

Ensure the housing bore and shaft are clean and free of debris before installation. Carefully align the seal to avoid damage to the sealing lip. Use appropriate tools to press the seal evenly into place without distortion. Verify the seal dimensions match the original equipment specifications for your vehicle model. Proper installation is critical to prevent leaks and ensure long-term performance.

Quality Assurance and Warranty

National power steering pump shaft seals are manufactured to meet industry standards for durability and performance. The nitrile material offers resistance to oil and wear, supporting reliable operation under typical automotive conditions. While specific warranty details are not provided, National products are generally backed by quality control processes to ensure fit and function for the listed vehicle applications.