Abstract: A sealing arrangement for a hydraulic plug-in connection for use in particular in the motor vehicle industry for hydraulic clutch and brake systems is fitted on a hydraulic plug-in connection and has a socket and a plug-in fitting which can be connected thereto. The plug-in fitting is attached to a hydraulic tube. The plug-in fitting has a sleeve and a sealing element fixed thereto, which seals off the plug-in connection both from the hydraulic tube and from the exterior of the socket. The sealing element and the end of the sleeve which receives the sealing element are designed so as to be able to install the sealing arrangement without it being possible for the sealing element to be separated axially from the sleeve when the plug-in connection is released.

Abstract: A sealing arrangement for a hydraulic plug-in connection for use in particular in the motor vehicle industry for hydraulic clutch and brake systems is fitted on a hydraulic plug-in connection and has a socket and a plug-in fitting which can be connected thereto. The plug-in fitting is attached to a hydraulic tube. The plug-in fitting has a sleeve and a sealing element fixed thereto, which seals off the plug-in connection both from the hydraulic tube and from the exterior of the socket. The sealing element and the end of the sleeve which receives the sealing element are designed so as to be able to install the sealing arrangement without it being possible for the sealing element to be separated axially from the sleeve when the plug-in connection is released.

Abstract: A central release device (10) for a hydraulic clutch actuation system has a housing (12) and a sleeve (16) provided with a flange (14), which together define a pressure chamber (18) for accommodating an annular piston (20), by means of which a release bearing (22) guided on the sleeve can be displaced. A spring (24), which braces the housing and the release bearing apart, subjects the housing to a force directed at the flange. According to the invention, a retaining element (28), which can be detached to operate the central release device, is provided which, when the central release device is in the non-mounted state, forms a stop for the housing and prevents this alone from moving against the force of the spring away from the flange of the sleeve beyond a predetermined amount.