Genuine OEM Volkswagen Brake Servo Seal, part number 1S0612250B. This seal creates a seal between the brake servo and the master cylinder, preventing vacuum loss and ensuring proper brake assist. It is located in the brake booster assembly. The seal has dimensions of 0.028m x 0.028m x 0.01m. Genuine OEM seals provide the precise fit and material composition required to maintain vacuum integrity and optimal brake performance.