骨架导向支撑环的上部设有环形凸棱并与密封圈相镶嵌连接。
The upper part of the framework guiding support ring is provided with circular ridges, is mutually inlaid and connected with the seal ring.
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。
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.
应用推荐