橡胶密封垫为一种自膨胀密封垫片，属于管道密封部件。本垫片是由外层环、中间膨胀环及内层环三部分构成的；外层环和内层环为一般的弹性密封环，中间膨胀环的中心有一环泡结构，两边为空心环，环外侧密封，环内侧开口；外层环和内层环都分为两部分，装在中间膨胀环环泡结构的内外侧。

领域

橡胶垫片具有耐油、耐酸碱、耐寒热、耐老化等性能，因此被广泛应用于汽车、电子、化工、抗静电、阻燃、食品等行业。

原理

橡胶密封垫用途的也是很广泛的，我们平时喝的饮料盖子上面都有一层橡胶垫，那个就是用来密封的，用这个来隔绝与外界空气的流通。在机械上面的工作原理有静态和动态的。总之都是用来进行与外界或者某个地方进行隔绝，密封垫工作原理也都是很简单，可以说是没有什么太多的原理，就是隔离。^[1]

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