National 7692S Manual Transmission Output Shaft Seal

Overview of National 7692S Manual Transmission Output Shaft Seal

The National 7692S manual transmission output shaft seal is engineered to provide reliable sealing performance for a range of Ford, Lincoln, Mazda, and Mercury vehicles. Designed with precision dimensions and durable polyacrylate material, this oil seal helps maintain transmission integrity and prevent fluid leaks.

• Inside diameter: 1.500 inch (38.100 mm)
• Outside diameter: 2.376 inch (60.350 mm)
• Flanged outside diameter: 2.640 inch (67.056 mm)
• Thickness: 0.420 inch (10.668 mm)
• Material: Polyacrylate with Redicoat surface treatment
• Helix type: Counter-clockwise spiral lip design
• Overall width with side lip: 1.458 inch (37.030 mm)
• Housing bore diameter: 2.372 inch (60.250 mm)

Detailed Product Description and Specifications

The National 7692S output shaft seal is part of the 7000 series and is specifically designed for manual transmissions. Its polyacrylate sealing material offers resistance to heat and wear, ensuring a long service life under demanding operating conditions. The counter-clockwise spiral lip design enhances sealing efficiency by directing fluid back into the transmission housing, reducing the risk of leaks. The Redicoat treatment on the seal surface improves corrosion resistance and installation durability.

With precise dimensions including a 1.500 inch inside diameter and a 2.376 inch outside diameter, this seal fits tightly within the housing bore of 2.372 inches, providing a secure and leak-proof fit. The flanged outside diameter of 2.640 inches allows for easy installation and proper seating within the transmission assembly.

Compatible Vehicles and Applications

This manual transmission output shaft seal is compatible with a wide range of Ford, Lincoln, Mazda, and Mercury models, including but not limited to:

• Ford Bronco, Mustang, Ranger, Explorer, F-150, F-250, and Econoline series
• Lincoln Continental, Town Car, Mark VI, Mark VII, and Grand Marquis
• Mazda B2300, B2500, B3000, B4000, and Navajo
• Mercury Cougar, Marquis, Villager, and Capri

Use the National 7692S seal to maintain proper transmission function and prevent oil leaks in these vehicles.

Common Issues Addressed by the National 7692S Seal

• Prevents manual transmission fluid leaks from the output shaft
• Reduces contamination of transmission internals by dirt and debris
• Maintains proper lubrication within the transmission system
• Minimizes wear on transmission components caused by fluid loss
• Helps avoid costly transmission repairs due to seal failure

Installation Notes and Tips

• Ensure the transmission output shaft and housing bore are clean and free of debris before installation
• Use appropriate tools to press the seal evenly into the housing bore without damaging the sealing lip
• Verify the seal orientation matches the counter-clockwise spiral lip design for optimal sealing
• Apply a light coating of transmission fluid or compatible lubricant on the seal lip before installation
• Inspect the seal after installation for proper seating and alignment

Quality Assurance and Warranty Information

National transmission seals, including the 7692S, are manufactured to meet strict industry standards for durability and performance. The polyacrylate material and Redicoat surface treatment contribute to extended service life and resistance to environmental factors. While specific warranty terms may vary, National typically offers coverage against manufacturing defects to ensure customer confidence in their products.