... less,self-lubricating 3) low wear,low friction Bearing Bushing for Rod application.With a steeel body, bronze liner and PTFE/lead ... bushing introduction:1, DU bushing has a common structure, consisting of a steel backing bonded to a porous bronze sinter layer with filled ... layer is black. DU bushing has good wear and friction performance over a range of loads, speeds and temperature conditions.3, DU ...