vt. stifle
... 单向阀 check valve 卡圈 clamping ring 闷盖 cover ...
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螺纹闷盖 screw-type blank cap
尼龙闷盖 Nylonplug
圆形金属闷盖 Metal lock plug
本实用新型结构简单，装饰盖与闷盖或丝堵具有互换性，操作使用简便易行。
The utility model has simple structure, and the decorative cover is interchangeable with the blank cap or the screw plug, which simplifies operation and use.
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