Genuine OEM Volkswagen Seal, part number 2HJ611335. This seal provides a critical seal to prevent the leakage of brake fluid from the master cylinder. It is located as part 7 in the brake master cylinder assembly diagram. The seal is made of a durable rubber compound designed to withstand brake fluid and pressure. Genuine OEM seals ensure precise fitment and long-lasting performance, preventing costly fluid leaks and maintaining brake system efficiency.