Genuine OEM Volkswagen Radial Shaft Seal Ring, part number 0C7398189A. This seal is designed to prevent the leakage of lubricants, such as oil, from rotating shafts within the transmission or gearbox assembly. It is typically made from a combination of durable rubber and metal components. Genuine OEM seal rings are manufactured to precise tolerances, ensuring an effective barrier against fluid loss and contamination, which is critical for the longevity of drivetrain components.