| 摘要 |
Push button comprising a body comprising a bearing wall and an annular lateral wall that extends from the bearing wall to a free end and has an external surface, a flow duct that extends into the body and leads to the outside via an outlet member protruding relative to the external surface of the lateral wall, an annular covering element covering the external surface of the lateral wall and fixedly attached to the body, the covering element being placed beneath the outlet member and being suitable for being fitted onto the lateral wall via the free end of the lateral wall.
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