在垫片的外环方向存在着具有较高残余压紧压力的闭合环带，它们对接头的紧密性有非常关键的作用。
In the direction of the existence of the outer ring gasket with high residual compression stress of the closed ring, the close of their joints have a crucial role.
在垫片的外环方向存在着具有较高残余压紧压力的闭合环带，它们对接头的紧密性有非常关键的作用。
In the direction of the existence of the outer ring gasket with high residual compression stress of the closed ring, the close of their joints have a crucial role.
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