| 摘要 |
Mobile packing joint, especially in drive system or hydraulic control unit components, composed of a slide, a packing ring and a sleeve, which, above each ring fissure, has at least one duct connecting its end and its beginning characterized in that in each duct (3, 4) connecting the end and the beginning of the fissures (1, 2), there is a check valve (5,6).<IMAGE>
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