Bearing & Bush Co offers permaglide plain bearings (ie Du Bush) which are dry self lubricating in nature. Du is a composite material consisting of three layers-a steel backing, a sintered porous bronze matrix, impregnated and overlaid with PTFE/lead mixture. The steel backing provides mechanical strength and the bronze interlayer gives a strong mechanical bond for the impregnated PTFE/lead mixture. The company also offers a wide range of self lubricated sintered bronze and iron sintered bushes and parts as well bronze with graphite filled oil groove type and plug type bushes as per drawings, samples and specifications.