A connection arrangement includes a first connection body and a second connection body for forming a pneumatic connection along a connection axis, and a sealing element configured to seal a sealing gap which surrounds the pneumatic connection and which has a longitudinal dimension which extends parallel to the connection axis. A pneumatic flow is able to travel through the first and second connection bodies along the connection axis. The first connection body has a through-hole having a cross section transverse to the connection axis. The second connection body is arranged at least partially in the through-hole. An at least partially circumferential first recess transverse to the connection axis is formed on an outer face of the first connection body extending parallel to the connection axis for receiving the sealing element.