With the piston seals of one type of cylinders as the research object,the O-rings and the lip seals were studied with finite element method and ANSYS software,and their equivalent stress was compared.

• 以某油缸的活塞密封为研究对象,运用有限元分析方法,借助ANSYS软件对O形圈和唇形圈进行了有限元分析,并比较了二者综合等效应力分布情况。