Under the seal block plays a sealing effect between the hooked rabbet and the glide path, can be useful to avoid splashing in the attack scene shake load under the effect of using three epdm.

下密封块是起着勾企与下滑道之间的密封效果，可有用避免在动摇荷载的效果下溅水景象的发作，应运用三元乙丙橡胶。

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The central lines of the glide block and the piston rod can automatically overlapped by the auto adjustment of the oscillating bearing so as to make the running of the glide block stable and flexible.

在剪板工作中，通过关节轴承的自动调节，可自动完成滑块与活塞杆中心线重合，使滑块运行平稳灵活。

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