过去人们曾经认为:由于 Gow-Joule效应(指伸张后的橡胶制品受热时产生收缩的现象),只有当转速和压差均很低时,才能用 O 形密封圈对转轴进行密封。但研究结果证明:如安装 O 形圈时使其与轴线呈一倾斜角度,旋转密封的寿命可提高15倍以上。O 形圈用作旋转密封件时,由于界面不光滑,使 O 形圈和支承表面间产生摩擦。即 It used to be thought that due to the Gow-Joule effect, which is a contraction of a stretched rubber product when it is heated, the shaft can be sealed with an O-ring only when both speed and pressure drop are low. However, the results of the study show that if the O-ring is installed at an oblique angle to the axis, the life of the rotary seal can be increased by more than 15 times. When the O-ring is used as a rotary seal, there is friction between the O-ring and the bearing surface due to the non-smooth interface. which is