In order to study the sealing performance of a spiral groove rotary sealing device used for cabin partition,and to obtain the optimal value range of the spiral groove structure,theoretical analysis was conducted on the influence of various parameters of the spiral groove on the leakage rate.The significant influencing factors of the leakage were selected,the Box-Behnken optimization method was used to design the leakage test of the sealing device,and the leakage results of the multi type prototypes were obtained.The mathematical model between leakage and influencing factors was established,the second-order interaction response surface of different factors on leakage was obtained,and the interaction law between different factors was analyzed.The results show that the leakage of the spiral groove sealing device increases first and then decreases with the increase of the number of grooves,spiral angle,and groove depth ratio,and gradually increases with the increase of the circumferential groove platform ratio and the radial groove platform ratio.The calculation results of the mathematical model have a strong correlation with the experimental data,indicating that the model can be used to accurately predict the leakage of the spiral groove rotating sealing device for cabin partition.Therefore,combining response surface experimental design method,genetic algorithm,and theoretical method to study the sealing performance of spiral grooves can quickly and accurately obtain the optimal range of spiral groove parameters.