Hydraulic unit for a clutch or a brake of a motor vehicle, comprises a plastic component which is located between a hydraulic fluid zone and the surroundings, and is provided with a barrier layer

摘要

The hydraulic unit comprises a plastic component (2) which is located between a hydraulic fluid zone (4, 22) and the surroundings, and is provided with a barrier layer (26). This layer is not penetrable by water and water vapor, and possesses a barrier effect which is superior to the barrier effect of the material of the plastic component.