These are steel backed bronze Impregnated bushes mainly used for High Load application upto 250 N/mm2 and temperature upto +280° C.DU 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 PTEE (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 PTEE/LEAD mixture. For further details please contact to :M/s. BEARING & BUSH Co.,59, NAKHODA STREET, NEW VORA`S BLDG., PYDHONIE, MUMBAI 400 003MAHARASHTRA, INDIA.