Torsional vibration damper comprises control elements (47) of an intermediate part (48), a damping unit (50) and a main drive pinion (92) arranged in a momentum transfer chamber (94) of a coupling device (58) provided with a supply feed unit (102) and a supply removal unit (104). Preferred Features: A sealing wall (37) is arranged in a fluid tight manner radially on one end on a gear mechanism housing (1) and receives a seal (39) on the other end so that the seal interacts with a penetrating region (42) of a connecting section (33).
