| 摘要 |
A flask closure having an aperture for receiving a hose or tubular body is proposed, which flask closure allows liquid to be consumed via a hose connection between the flask and the protective mask in the case of personnel working in a contaminated area in the event of a catastrophe or crisis. In this case, the opening of the flask is brought about by pressing the tubular body in counter to the spring pressure of a sealing sleeve.
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