National 710788 Engine Camshaft Seal - Front

Engine Camshaft Seal Overview

National 710788 is an engine camshaft seal built for Volvo applications that require a precise sealing solution at the front of the engine. It uses a fluoro-elastomer sealing material and a clockwise spiral lip design to help maintain a consistent seal under operating conditions.

Key Features

• Fluoro-elastomer construction for sealing performance in engine environments.
• Clockwise spiral lip design for controlled sealing contact.
• Metric dimensions for accurate housing and shaft matching.
• Part number 710788 for straightforward identification and ordering.
• Cross-references Timken SL260039 and MAHLE 67761 for the same application.

Detailed Description

This National camshaft seal is part of the 710700 series and is engineered as an oil seal for front camshaft sealing applications. The seal measures 51.000 mm inside diameter, 65.200 mm outside diameter, and 7.000 mm width, with a 65.000 mm housing bore. National has supplied sealing products for more than 75 years, and this 710788 seal reflects that focus on dimensional accuracy and modern sealing design. It is a direct-fit option for a wide range of Volvo models, including Volvo S60, Volvo V70, and Volvo XC90 applications.

What It Helps Address

• Oil seepage at the camshaft seal area.
• Loss of sealing integrity from worn elastomer material.
• Improper fit from incorrect seal dimensions.
• Noise or contamination concerns related to a compromised engine seal.

Installation Notes and Tips

Verify shaft diameter, housing bore, and seal orientation before installation. The clockwise spiral lip design must be installed in the correct direction for proper sealing action. Confirm the vehicle application against the listed Volvo fitment, including Volvo S40, Volvo C70, and Volvo S80 models, before service begins.

Quality Assurance

National is known for sealing products backed by long industry experience and ongoing product development for current vehicle platforms. Part number 710788 is built to meet the dimensional and material requirements expected for engine sealing service.