The periphery of the plug body, which is far from the plug handle, is provided with a plurality of circular grooves, in which the O-shaped rubber seal ring is embedded.
本发明远离水塞提手的水塞体的外周面上设置若干圈环形凹槽，O形橡胶密封圈卡嵌在环形凹槽内。
If necessary, install a new O-ring (40) and O-ring (70) on knurled plug (30) or (80).
如果必要，在堵塞(30)或(80)安装新的“O”型封圈(40)和“O”型封圈(70)。用手安装堵塞。
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