National 2692 Engine Crankshaft Seal - Front

Overview of National Engine Crankshaft Seal 2692

The National 2692 engine crankshaft seal is designed to provide reliable sealing performance for various Ford, Lincoln, Mazda, and Mercury vehicles. Engineered with precision, this oil seal helps maintain engine integrity by preventing oil leaks around the crankshaft.

• Inside diameter: 1.875 inches (47.63 mm)
• Outside diameter: 2.565 inches (65.15 mm)
• Flanged outside diameter: 3.160 inches (80.26 mm)
• Thickness: 0.528 inches (13.41 mm)
• Material: Polyacrylate with clockwise-spiral lip design
• Redicoat surface treatment for enhanced durability
• Compatible with housing bore diameter of 2.561 inches (65.05 mm)
• Part number: 2692, Series 2000, Type 76

Technical Details and Design Features

The National 2692 crankshaft seal features a polyacrylate construction that offers resistance to heat and oil degradation, ensuring long-lasting performance. Its clockwise-spiral lip design improves sealing efficiency by directing oil back into the engine, reducing leakage. The seal’s flanged outside diameter of 3.160 inches (80.26 mm) provides a secure fit within the housing bore of 2.561 inches (65.05 mm). The Redicoat treatment enhances the seal’s surface, improving wear resistance and extending service life.

Compatible Vehicles and Applications

This engine crankshaft seal is compatible with a wide range of Ford, Lincoln, Mazda, and Mercury models, including but not limited to the Ford Mustang, Explorer, F-150, Bronco, and Econoline series, as well as Lincoln Continental, Mark VI, and Mercury Cougar. It is suitable for use in engines requiring a 1.875-inch shaft diameter and fits housing bores around 2.561 inches.

Common Issues Addressed by National 2692 Seal

• Prevents oil leaks around the crankshaft area
• Reduces engine contamination from external debris
• Maintains proper oil pressure by sealing the crankshaft
• Minimizes wear on engine components due to oil loss
• Helps avoid costly engine repairs related to seal failure

Installation Notes and Tips

Ensure the housing bore and shaft surfaces 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 clockwise-spiral lip design for optimal performance. Lubricate the seal lip lightly with clean engine oil prior to installation to reduce initial wear.

Quality Assurance and Warranty

National’s 2692 crankshaft seal is manufactured to meet OEM specifications and undergoes rigorous quality control to ensure consistent performance. The product includes a limited warranty against defects in material and workmanship, providing confidence in its durability and reliability for compatible Ford, Lincoln, Mazda, and Mercury vehicles.