| 摘要 |
This stopper is associated with an intermediate ring 6 provided with an external thread 7, fitting over the neck 11 of the container and comprising, on the one hand, a stop means 10 limiting its longitudinal engagement on the neck and, on the other hand, an internal annular rib 8 capable of clip-type engagement in the groove 12 of the neck on applying on the latter, and with the above-mentioned stop means, a longitudinal tightening stress opposing the possible rotation of the ring 6 during the rotation of the stopper 1. <IMAGE>
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