适用于液压缸活塞杆往复运动用密封装置，也可用于法兰端盖的静密封装置。
Apply to reciprocating motion of hydraulic cylinder piston rod sealed device can also be used to cover the static flange seal.
用来更换的套管其一端的法兰比另一端稍微柔软一些。
Replacement sleeves are made with one flange end slightly softer than the other.
两端有两个法兰盘，让您轻松地抑制弹簧安装或删除。
The ends have two flanges that allow you to easily depress the spring to install or remove.
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