充分说明梯形槽夹角是梯形槽o形橡胶密封圈设计中必须关注的一个重要设计变量。
All these indicate the included Angle of the dovetail groove is an important design variable in the rubber O-sealing ring design.
安装时应将橡胶密封圈四周，梯形螺纹内，压环油槽内，中心管外径上涂黄油。
The grease should be laid on the periphery of seal ring, the inner of ladder-shaped screw thread and chuck ring oil channel during installation.
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