The work aims to provide reference for the selection and structural design of the sealing ring with end face statically sealed by comparatively analyzing the sealing performance of sealing rings with the convex, rectangle and Y-shaped cross sections, respectively. Simulation analysis of the stress and contact pressure of 3 kinds of sealing rings with different cross sections were carried out and the results were compared through the finite element analysis on the contact with large deformation based on Ansys. In the compression process of sealing rings with convex cross section, the maximum stress and the maximum contact pressure changed uniformly, and the maximum contact pressure surface was wide. For the sealing rings with rectangle cross section, the maximum stress changed uniformly, and the maximum contact pressure was steeply increased when the compressibility of sealing ring was over 18%. After the compressibility was over 18%, the maximum stress and the maximum contact pressure of sealing ring with Y-shaped cross section were steeply increased, and the maximum contact pressure surface was narrow. The sealing performance of sealing ring with the convex cross section used in the static sealing of end surface of a specific seal groove is optimal.