In order to study the influence of material groups on the performance of mechanical seal under dry friction condition,antimonyimpregnated graphite and resinimpregnated graphite were selected to carry out experiments on the self designedtest system with 38CrMoAlA (no spraying),38CrMoAlA (surface spraying Cr2O3) and 40CrNiMoA (surface spraying Cr2O3) respectively.The test results of temperature rise,wear rate,friction power consumption and leakage rate of the end face were compared and analyzed.The results show that under dry friction condition,the friction and wear behavior of different groups of materials shows diversity.Among the six groups,antimony impregnated graphite and 38CrMoAlA (surface sprayed Cr2O3) have the best matching performance.Metal-impregnated graphite is more suitable for extreme working conditions and has better friction and wear properties.while resin impregnated graphite has better sealing performance and less leakage rate.Spraying materials on the surface of the moving ring can effectively improve the hardness of the moving ring,optimize the surface structure,and improve the friction and wear performance and sealing performance of the moving ring.The influence of the matrix material of the moving ring on the matching performance can not be ignored.The material with good thermal conductivity and low linear expansion coefficient can reduce the end temperature of mechanical seal