National 710700 Automatic Transmission Output Shaft Seal - Right

Automatic Transmission Output Shaft Seal

The National 710700 automatic transmission output shaft seal is built for vehicles that need a precise sealing surface at the transmission output shaft. It uses a fluoro-elastomer construction and a bi-directional lip design to help maintain a dependable seal in demanding transmission service.

Compatible With select Ford Fusion, Lincoln MKZ, Mazda 6, Mazda CX-7, Mazda CX-9, Mercury Milan, and Hyundai Veracruz applications with Aisin TF-81-SC or TF-82SC transmissions. The National 710700 is a metric oil seal engineered around the listed shaft and housing dimensions for the right-side transmission position.

Key Features

• Part number: National 710700
• Automatic transmission output shaft seal / oil seal
• Bi-directional lip design for sealing performance in either rotation direction
• Fluoro-elastomer material for transmission sealing applications
• Metric dimensions: 42.000 mm inside diameter, 79.200 mm outside diameter, 10.000 mm width
• Housing bore: 79.000 mm
• Overall width with side lip: 14.000 mm
• Right-side fitment on listed applications

Detailed Description

National 710700 is an automatic transmission output shaft seal designed to help retain transmission fluid at the output shaft interface. The fluoro-elastomer sealing material is selected for transmission environments, while the bi-directional lip design supports sealing at the shaft under operating conditions. This seal measures 42.000 mm on the inside diameter, 79.200 mm on the outside diameter, and 10.000 mm in width, with a 79.000 mm housing bore specification.

National has supplied sealing solutions for more than 75 years, and this part reflects that focus on dimensional accuracy and transmission sealing performance. It is a direct-fit style service part for the listed right-side applications, including Ford Fusion, Mazda CX-7, Mazda CX-9, Mazda 6, Mercury Milan, Lincoln MKZ, and Hyundai Veracruz models equipped with the specified Aisin transmission variants. This part cross-references SKF 16920A for the same application.

What It Helps Address

• Transmission fluid leakage at the output shaft seal area
• Fluid seepage caused by worn or hardened seal material
• Seal wear from age, heat, and transmission fluid exposure
• Service issues related to a damaged right-side output shaft seal
• Replacement needs during transmission maintenance or repair

Installation Notes and Tips

Verify the transmission code and shaft dimensions before installation. Clean the housing bore and shaft sealing surface thoroughly, and inspect for scoring, corrosion, or debris that could affect sealing. Confirm right-side placement and match the seal to the listed Aisin TF-81-SC or TF-82SC transmission application before assembly.

• Fits 2006-2012 Ford Fusion, right, with Aisin TF-82SC Transmission
• Fits 2007-2012 Hyundai Veracruz, right, with Aisin TF-81-SC Transmission
• Fits 2007-2012 Lincoln MKZ, right, with Aisin TF-82SC Transmission
• Fits 2008-2012 Mazda CX-7, right, with Aisin TF-82SC Transmission
• Fits 2008-2012 Mazda CX-9, right, with Aisin TF-82SC Transmission
• Fits 2005-2011 Mazda 6, right, with Aisin TF-82SC Transmission
• Fits 2006-2011 Mercury Milan, right, with Aisin TF-82SC Transmission
• Fits 2013 Mazda CX-9, right, with Aisin TF-82-SC Transmission

Quality Assurance

National is known for sealing products backed by long-term industry experience and ongoing design development for modern vehicles. The 710700 is manufactured as a metric transmission seal with specified dimensions and material selection for the listed applications.