National 710982 Manual Transmission Output Shaft Seal

Overview of National 710982 Manual Transmission Output Shaft Seal

The National 710982 manual transmission output shaft seal is engineered for reliable sealing performance in Mazda Miata and RX-8 models. Constructed from durable polyacrylate material, this oil seal is designed to maintain transmission integrity by preventing fluid leaks and contamination.

• Material: Polyacrylate for enhanced durability and resistance
• Flanged Outside Diameter: 2.362 inches (60 mm)
• Housing Bore Diameter: 2.008 inches (51 mm)
• Outside Diameter: 2.016 inches (51.2 mm)
• Overall Width with Side Lip: 0.913 inches (22.3 mm)
• Shaft Diameter: 1.496 inches (38 mm)
• Helix Type: Counter-clockwise spiral lip design for effective sealing
• Series: 710900

Detailed Product Description

The National 710982 output shaft seal is specifically designed for manual transmissions in Mazda Miata and RX-8 vehicles. Its polyacrylate construction offers excellent resistance to heat, oil, and wear, ensuring long-lasting performance under demanding driving conditions. The seal features a counter-clockwise spiral lip design that enhances sealing efficiency by directing fluid back into the transmission housing, reducing the risk of leaks. With precise dimensions including a flanged outside diameter of 2.362 inches and a housing bore of 2.008 inches, this seal fits tightly to maintain a secure barrier around the 1.496-inch output shaft.

Common Applications and Problem Solving

• Prevents manual transmission fluid leaks in Mazda Miata and RX-8 models
• Protects transmission components from dirt and debris contamination
• Reduces wear on output shaft bearings by maintaining proper lubrication
• Helps avoid costly transmission repairs due to seal failure
• Maintains optimal transmission performance and longevity

Installation Notes and Tips

• Ensure the transmission housing bore and shaft are clean and free of debris before installation
• Use appropriate tools to press the seal evenly into the housing bore without distortion
• Verify the seal’s orientation matches the counter-clockwise spiral lip design for correct fluid retention
• Inspect the output shaft for wear or damage prior to installing the new seal
• Apply a light coating of transmission fluid to the seal lip to ease installation and improve initial sealing

Quality Assurance and Warranty

National’s 710982 manual transmission output shaft seal is manufactured to meet strict quality standards for fit and function. The polyacrylate material and precision engineering ensure consistent sealing performance compatible with Mazda Miata and RX-8 transmissions. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in product reliability.