The design calculation of the large O ring rubber self energized seal (without bolt and nut )used for the vacuum equipment and its application results are introduced.
介绍真空设备法兰采用大直径O形环橡胶自紧式密封（不用螺栓和螺母）的设计计算及其应用效果。
A variance calculation of test data is made and a criterion of O-ring process techniques stabilization is given.
在开展考核试验工作的基础上，通过方差计算，给出了一种判定O形圈工艺稳定性的方法。
The theoretical calculation method for the friction resistance produced by O-sealing washer is seldom expounded in existing referance materials and document.
现有的资料及文献对O形密封圈产生摩擦阻力的理论计算方法介绍甚少。
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