“O”形橡胶圈的使用性能取决于接触表面的状态以及按公称应力估算的接触应力值。胶圈用于不同法兰配合结构(图1)时,其负荷与变形率的关系,已进行过研究。负荷 P 按下列方程确定: The performance of “O” shaped rubber rings depends on the condition of the contact surface and the contact stress estimated at nominal stress. Apron for different flange with the structure (Figure 1), the load and the relationship between the deformation rate, has been studied. Load P is determined by the following equation: