National 710628 Automatic Transmission Torque Converter Seal

Overview of National 710628 Automatic Transmission Torque Converter Seal

The National 710628 automatic transmission torque converter seal is engineered to provide reliable sealing performance for select Chrysler, Dodge, Ram, and Volkswagen vehicles. Designed with durable polyacrylate material and a counter-clockwise spiral lip design, this seal helps maintain transmission fluid integrity and prevents leaks in critical drivetrain components.

• Constructed from high-quality polyacrylate for durability and resistance to wear
• Counter-clockwise spiral lip design enhances sealing efficiency
• Flanged outside diameter of 2.450 inches (62.230 mm) for secure fitment
• Inside diameter of 1.500 inches (38.100 mm) matches shaft specifications
• Thickness of 0.239 inches (6.070 mm) ensures proper sealing depth
• Redicoat coating applied for improved corrosion resistance
• Compatible with multiple Chrysler, Dodge, Ram, and Volkswagen models

Detailed Product Description

The National 710628 torque converter seal is part of the 710600 series, designed specifically for automatic transmissions requiring precise sealing solutions. Its polyacrylate construction offers excellent resistance to heat and transmission fluids, extending the service life of the seal. The counter-clockwise spiral lip design provides a tight seal around the 1.500 inch (38.100 mm) shaft, preventing fluid leaks that can lead to transmission damage. The flanged outside diameter of 2.450 inches (62.230 mm) ensures a secure fit within the housing bore, which measures approximately 2.247 inches (57.070 mm). With a thickness of 0.239 inches (6.070 mm), this oil seal maintains proper contact pressure for effective sealing without excessive wear.

Compatible Vehicles and Applications

This torque converter seal is compatible with a range of vehicles, including but not limited to:

• Chrysler Avenger (200 model year)
• Dodge Grand Caravan, Journey, C/V, and Ram ProMaster 1500, 2500, 3500
• Volkswagen Routan
• Chrysler Pacifica, Sebring, Town & Country

It is designed to replace worn or damaged seals in automatic transmission systems, helping maintain optimal transmission fluid pressure and preventing contamination.

Common Issues Addressed by the National 710628 Seal

• Prevents automatic transmission fluid leaks around the torque converter shaft
• Reduces risk of transmission overheating due to fluid loss
• Minimizes contamination ingress into the transmission system
• Helps maintain proper hydraulic pressure for smooth transmission operation
• Prevents premature wear of transmission components caused by fluid leakage

Installation Notes and Tips

When installing the National 710628 torque converter seal, ensure the housing bore and shaft are clean and free of debris. Proper alignment is critical to avoid damage to the seal lip. Use appropriate tools to press the seal evenly into the housing bore without distortion. Verify the counter-clockwise spiral lip orientation matches the transmission design to ensure effective sealing. Consult vehicle-specific service manuals for torque specifications and installation procedures.

Quality Assurance and Warranty

National seals are manufactured to meet industry standards for durability and performance. The 710628 seal includes a Redicoat corrosion-resistant coating to extend service life. While specific warranty details are not provided, National products typically adhere to quality control processes to ensure reliability in automotive transmission applications.