Elring 776.688 Engine Cylinder Liner O-Ring

Elring 776.688 Cylinder Liner O-Ring

Elring 776.688 is an engine cylinder liner O-ring made from FPM (fluoride rubber) for sealing service in the engine block area. With a 94.0 mm inside diameter, 98.0 mm outside diameter, and 2.0 mm thickness, it is sized for precise sealing in compatible applications, including 1984-1991 Volkswagen Vanagon engines.

Key Features

• Engine cylinder liner O-ring for sealing applications
• FPM (fluoride rubber) material for engine sealing service
• 94.0 mm inside diameter for accurate fitment
• 98.0 mm outside diameter and 2.0 mm thickness
• Round O-ring shape for cylinder liner sealing interfaces
• Elring part number 776.688

Detailed Description

This Elring cylinder liner O-ring is built for engine sealing where the liner meets the block sealing surface. The FPM construction is selected for demanding engine environments, while the dimensional profile helps support a proper seal in the specified application. For buyers searching for a Volkswagen Vanagon cylinder liner O-ring, Elring 776.688 provides a direct-reference option for 1984-1991 Volkswagen Vanagon service work. This part cross-references N 901 683 01 for the same application.

Common Issues Addressed

• Coolant or oil seepage at the cylinder liner sealing area
• Loss of sealing integrity during engine rebuild or overhaul
• Replacement of a worn, flattened, or heat-aged O-ring
• Service needs on 1984-1991 Volkswagen Vanagon engine sealing systems

Installation Notes and Tips

Confirm the liner groove and sealing surfaces are clean, dry, and free of debris before installation. Measure the groove and compare it to the O-ring dimensions of 94.0 mm inside diameter, 98.0 mm outside diameter, and 2.0 mm thickness before assembly. Use the correct engine service procedure for the Volkswagen Vanagon cylinder liner seal location, and avoid twisting or nicking the O-ring during placement.

Quality Assurance

Elring is known for engine sealing components used in professional repair and rebuild applications. Verify part number 776.688 against the vehicle and engine specification before installation to ensure the correct sealing component is selected.