In view of the actual operation of graphene oxide asbestos-free gaskets,a three-dimensional finite element model of bolt flange system was established,and Abaqus software was used to study the influence of bolt pretension force,medium pressure and gasket size on the stress field of graphene oxide asbestos-free gasket.The temperature factors of different media were studied by using steady-state temperature field to simulate the temperature and stress field distribution of gaskets under actual operating conditions.The results show that the pressure of the gasket increases with the increase of bolt pretension force,and decreases with the increase of the internal pressure load and the width of the gasket.The maximum temperature exists on the inside of the gasket,and the temperature difference between the inside and outside of the gasket increases gradually with the increase of the medium temperature.The gasket stress increases from inside to outside along the radial direction,and with the increase of medium temperature,the gasket stress is reduced.The gasket stress is unevenly distributed along the outer perimeter,showing a 45° for a cycle change.