A flexible, usually elastomeric sealing element and housing used to seal an irregular surface such as a wireline.
一种能变形的、通常是弹性的密封部件和外壳，用于密封不规则的表面，如电缆等。
A flexible, usually elastomeric sealing element and housing used to seal an irregular surface such as a wireline.
一种能变形的、通常是弹性的密封部件和外壳，用于密封不规则的表面，如电缆等。
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