National 331228H Automatic Transmission Torque Converter Seal - Front

Overview of National 331228H Automatic Transmission Torque Converter Seal

The National 331228H automatic transmission torque converter seal is engineered to provide reliable sealing performance for a range of Chrysler, Dodge, Jeep, Hyundai, Mitsubishi, Plymouth, and Ram vehicles. Designed with precision dimensions and durable polyacrylate material, this seal helps maintain transmission fluid integrity and prevents leaks in critical drivetrain components.

• Inside diameter: 1.500 inch (38.100 mm)
• Outside diameter: 2.253 inch (57.230 mm)
• Flanged outside diameter: 2.450 inch (62.230 mm)
• Thickness: 0.360 inch (9.150 mm)
• Sealing material: Polyacrylate with clockwise-spiral lip design
• Redicoat finish for enhanced durability
• Compatible with housing bore of 2.249 inch (57.120 mm)

Technical Description and Material Specifications

This automatic transmission torque converter seal from National is constructed from polyacrylate, a material known for its resistance to heat, wear, and transmission fluids. The seal features a clockwise-spiral helix lip design that ensures effective sealing under dynamic conditions, reducing the risk of fluid leakage. The redicoat treatment adds an extra layer of corrosion resistance, extending the service life of the seal. With precise inside and outside diameters, this seal fits securely within the housing bore and around the shaft, maintaining optimal sealing pressure.

Compatible Vehicles and Applications

The National 331228H seal is compatible with a wide range of vehicles, including popular models such as the Chrysler 300M, Dodge Caravan, Jeep Grand Cherokee, Hyundai Sonata, Mitsubishi Eclipse, Plymouth Acclaim, and Ram 1500. This part is specifically designed for automatic transmission torque converters in these makes and models, ensuring proper fitment and function.

Common Issues Addressed by This Seal

• Prevents automatic transmission fluid leaks around the torque converter
• Reduces contamination of transmission fluid by external debris
• Maintains hydraulic pressure within the transmission system
• Minimizes premature wear of transmission components due to fluid loss
• Helps avoid costly transmission repairs caused by seal failure

Installation Notes and Tips

When installing the National 331228H torque converter seal, ensure the housing bore and shaft are clean and free of debris. Use appropriate tools to avoid damaging the seal lips during installation. Verify the seal orientation matches the clockwise-spiral lip design for optimal sealing performance. It is recommended to inspect related transmission components for wear or damage during replacement to maintain system integrity.

Quality Assurance and Warranty

National transmission seals are manufactured to meet industry standards for durability and performance. The 331228H seal includes a redicoat finish to enhance corrosion resistance and longevity. While specific warranty details may vary, National products typically come with a limited warranty against manufacturing defects, providing confidence in the product's reliability for compatible Chrysler, Dodge, Jeep, Hyundai, Mitsubishi, Plymouth, and Ram vehicles.