NTN NS470059 Automatic Transmission Extension Housing Seal

The NTN NS470059 is a premium multi-purpose oil seal designed for automatic transmission extension housing applications. This OE-style replacement seal is manufactured by BCA Bearings (now part of the NTN bearing family), delivering reliable sealing performance for transmission output shafts and extension housings.

Key Specifications:

• Shaft Diameter: 1.500 inches (38.1mm)
• Outer Diameter: 2.378 inches (60.4mm)
• Width: 0.500 inches (12.7mm)
• Housing Bore: 2.374 inches (60.3mm)
• Design Type: 47 series with spring-loaded dual lip
• Material: Nitrile rubber (NBR) sealing material
• Temperature Range: -40°F to 225°F (-40°C to 107°C)

Features and Benefits:

• Spring-loaded dual lip design ensures consistent sealing pressure throughout service life
• Nitrile construction provides excellent low-temperature capability and minimal swell in hydrocarbon fluids
• RediCoat surface treatment for enhanced installation and protection
• Maximum shaft surface speed rating of 3,000 feet per minute
• Meets or exceeds OEM specifications for quality and performance
• Part of the trusted National 470000 series seal family

This seal is commonly used in manual and automatic transmission applications, providing critical protection against fluid leakage and contamination. Cross-references include National 470059, 470380, 15005, SS2564, and WS470059. Backed by over 75 years of sealing expertise from the National/NTN brand.