The utility model relates to the field of medical soft barrels, in particular to a medical soft
barrel with good sealing performance, which comprises a medical soft
barrel body, a fixing ring is arranged at the top end of the medical soft
barrel body, a sealing cover is screwed on the fixing ring, an auxiliary sealing component is inserted into the top of the fixing ring, and the auxiliary sealing component controls an auxiliary sealing ring. A limiting ring is installed at the top end of the auxiliary sealing ring, limiting protruding blocks are installed in the middles of the two ends of the outer wall of the auxiliary sealing ring, and first O-shaped sealing rings are embedded in the positions, located above and below the limiting protruding blocks, of the outer wall of the auxiliary sealing ring. According to the medical soft barrel sealing device, the auxiliary sealing
assembly is connected to the top end of the medical soft barrel in an inserted mode, the auxiliary sealing
assembly preliminarily seals the medical soft barrel, and meanwhile the sealing performance between the medical soft barrels can be further enhanced by being matched with the second sealing ring arranged outside the auxiliary sealing
assembly and the sealing cover connected with the auxiliary sealing assembly in a screwed mode.