| 摘要 |
A piece mounted in a fixed, detachable, and sealed manner, on a rigid, annular collar of a second piece having an end opening, include an annular peripheral wall having an inner face that can come into contact with the outer face of the collar. The first includes a transversal wall that can enter the opening; and an annular wall forming a skirt, the inner face of the skirt including a part with a larger diameter, a part with a smaller diameter and an intermediate part that can come into contact with the conjugated parts of the outer face by clamping. The transversal wall and the skirt form one component and are made of a material having a high degree of flexibility enabling the piece, by manual external action, to be brought into an intermediate state wherein it is sufficiently enlarged to be slipped over or removed from the second piece, while remaining in the field of elastic deformation. |
