DYB401 is backed with weaved copper mesh, polymers(PTFE+Pb)are well imbedded into the pores of the mesh which adequately deploy and integrate advantages of the metal and the compound polymer. Thus, DYB401 is endowed with a smaller friction coefficient and better capability of anti-abrasion and self-lubrication. Softer texture, easiness for fixing and maintenance-free are its main attractive points. It can work as a noise absorber in conditions of steel against steel friction to achieve an ideal condition of non-resistance vibration, non-noise and non-oil lubrication. DYB401 can be widely used in the light load self-lubricating applications. E.g. door gemel system and navigation shaft on the car, office equipment and joint positions on other machines.