Connecting system and constant velocity joint

A system for connecting a shaft to a joint, said system comprising:

• a shaft journal that can be connected to the shaft,
• a sleeve that is connected to a hub of the joint and that has a central opening for receiving the shaft journal), and
• a retaining ring for axially fixing the shaft journal in the opening;
• wherein:
• the opening comprises a shaft-side first opening section having an internal diameter which is larger than the internal diameter of a joint-side second opening section;
• a first radial stop section is provided between the first opening section and the second opening section;
• the shaft journal comprises a shaft-side first shaft-journal section having an external diameter which is larger than the external diameter of a joint-side second shaft-journal section, and
• a second radial stop section is provided between the first shaft-journal section and the second shaft-journal section for delimiting the insertion path of the shaft journal in the sleeve,
• said shaft journal comprising a sealing ring that is configured to seal said sleeve,
• said sealing ring being disposed in a sealing-ring groove on said shaft-side first shaft-journal section, and
• said retaining ring being disposed in a peripheral groove on said shaft-side first shaft-journal section.