System center/inner tube with o-ring seal

A multi-tube vibration damper for a vehicle, comprising:

• an outer tube, a middle tube, and an inner tube that are arranged coaxially;
• a piston rod arranged in the inner tube so as to be movable to and fro;
• a working piston arranged on and movable with the piston rod;
• an outer tube balancing chamber for receiving damping medium formed between the outer tube and the middle tube;
• a middle tube balancing chamber for receiving damping medium formed between the middle tube and the inner tube;
• and
• a connecting element disposed between the inner tube and the middle tube,
• wherein the middle tube includes a middle tube opening for fluidic through-connection of the outer tube balancing chamber to the middle tube balancing chamber,
• wherein the inner tube includes an inner tube opening for fluidic through-connection of the middle tube balancing chamber to an inner chamber of the inner tube, wherein the inner tube is at least partially filled with damping medium, wherein the inner chamber of the inner tube is divided by the working piston into a rod-side working chamber and a rod-remote working chamber,
• wherein the connecting element is disposed between the inner tube and the middle tube on each side of the middle tube opening facing tube ends of the middle tube, the connecting element comprising a radially circumferential sealing element that seals the middle tube balancing chamber against the outer tube balancing chamber at least with respect to damping medium.