| 摘要 |
The head (24) of each insert (18) for locking the seal has, on the body side, a sharp-edged snout (30) delimited by two disengaged surfaces (29, 31), the arrangement being such that when the seal is in place in the housing (socket) (3) and the male end (1) is forcefully inserted into the latter, thereby radially compressing the body of the seal, the two disengaged surfaces (29,31) form between them, in the vicinity of the sharp edge (30), an angle projecting towards the bottom of the housing (socket), and this is the case at least for large diameters of the male end. Application to locking pressurised pipelines made of spheroidal graphite cast iron. <IMAGE>
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