Security and reliability are the main focus of annular metal seal assembly. It is concluded that the factors
influence sealing performance of annular metal seal assembly most in view of working conditions of annular metal seal
assembly. Taking major influencing factors with response surface method (RSM) analysis, and determining coefficient of
regression analysis with finite element method (ANSYS) experiment. Second-order corresponding model is established
and the best corresponding interval is concluded. Getting the reasonable values of bulge radius r and loading F on the
premise of guarantee the y value and providing theoretical guidance for field operation combined with metal sealing seal
principles and experimental research.