The numerical simulation of the drumring consisted by polyurethane and butadieneacrylonitrile rubber was carried out by using ANSYS software.The influence on seals and sealing performance by different friction coefficient was discussed,and the distributions of Von Mises stress,shear stress and contact stress of the drumring under different working conditions were obtained.The result shows that the drumring has good sealing performance under given normal operating conditions.The friction coefficient of the sealing ring material has a great influence on the dynamic seal,and larger friction coefficient will increase the wear of sealing surface.The optimal friction coefficient of drumring is about 0.1.