Aiming at the serious problem of mechanical seal wear under the operating condition of non-pressure oil injection,the friction and wear tests of carbon-graphite impregnated furan resin M180K and antimony filled carbon M181D paired with metal ring 9Cr18 were carried out based the multi-function friction and wear testing machine.Influences of operating parameters including the axial load and linear velocity on the two friction characteristic parameters of friction coefficient and friction torque of impregnated graphite were discussed,and the effects of linear velocity on the two friction characteristic parameters under the different friction state were investigated.The surface topographies of the two kinds of impregnated graphite before and after the test were collected by the three-dimensional surface topography instrument.The results indicate that increasing the pv values in a certain range contributes to decreasing the friction coefficient of impregnated graphite under the condition of lower viscous oil lubrication,but the increase of axial load improves the friction torque,while increasing the linear velocity helps to decrease the friction torque as the axial load is larger.Under the same operating condition and friction state,the friction coefficient of antimony filled carbon is significantly lower than that of carbon-graphite impregnated furan resin and the surface wear of the former is slight.In contrast,the wear resistance of antimony filled carbon is better and it is suitable for high parameter conditions.