| 摘要 |
The present invention relates to a protecting nut (25) intended to be screwed onto a barrel (12) in which there slides a button (14), comprising an elastic diaphragm (33-1) substantially in the shape of a bell integral with one face of the nut and clamping around the button, and an annular seal located on the opposite face of the nut. The diaphragm and the seal (33-2) form a single component and are joined together by means of holes (29) passing through the nut. …<IMAGE>… |
