To study the long-term storage distortion of turbo pump end-face seal, the interference fit and long term storage creep character of the stationary seal ring of end-face seal is analyzed using finite element software. The creep behavior is formulated using strain ratio harden material model. The stress-strain of the module and the deflection of the graphite annulus are present in different storage life. And turbo pump end-face seal's reliability is obtained using hierarchical Bayesian zero-failure estimation and stress-strength interference method. In the latter method, simulation result is employed. The long-lime storage reliability estimation using field test information and simulation information can effectively increase the accuracy of estimator under small sample situation, and is more credible.