In order to explore the characteristics of the liquid lubricated face seals with derived geometries of the spiral groove,the Reynolds equation considering the mass conservation JFO cavitation boundary conditions was established based on the middlegrooved face seal type and was numerically solved by the finite difference method.The performances of spiral groove,twosegment groove and threesegment groove were compared and analyzed,and the influence of structural parameters and operating parameters on pumping capacity,dynamic pressure bearing capacity and cavitation condition was discussed.The film thickness at the groove boundary in the calculation domain was dealt with harmonic averaging.The results show that within the given parameters,the pumping rates of three types of grooves are nearly all positive,namely achieving upstream pumping.The loadcarrying capacity of threesegment groove is significantly less affected by the speed than the other two groove types.Threesegment groove presents the lowest cavitation,followed by twosegment groove.Compared with spiral groove and twosegment groove,threestage groove type is less affected by structural parameters and operating parameters,and maintains more stable loadcarrying capacity and upstream pumping performance