Rotary airbag sealing device

The utility model discloses a rotary airbag sealing device which comprises a closed annular seal ring (1) and a central ring (7), wherein the central ring (7) is annular; a bracket (6) is arranged between the seal ring (1) and the central ring (7); an air nozzle (2) and a knob (4) are arranged on the central ring (7); the seal ring (1), the central ring (7) and the bracket (6) are all hollow; the knob (4) is opened and the sealing device is inflated and deflated through the air nozzle (2). Compared with the prior art, the sealing device has the characteristics of simple structure, good sealing effect and the like.