These are steel backed bronze Impregnated bushes mainly used for High Load application upto 250 N/mm2 and temperature upto +280°C.
DU type MDU is a composite material consisting of three layers viz., steel backing (Low Carbon Steel), A Porous Bronze (90% Cu & 10% Sn) sintered Matrix, overlaid with a mixture of PTFE (Poly Tetra Fluro Ethylene) and Lead.
Steel Backing provides the underlying strength while porous bronze sintered layer provides the strong mechanical bond for the impregnated PTFE/LEAD mixture.
