Mipiringidzo ya polyurethane ili ndi zinthu zambiri zabwino, kuphatikiza mphamvu zamakina, kutsekereza bwino, kusaphulika, kukana dzimbiri, kukana kutentha, kuzizira, kukana mafuta komanso kukana kukalamba.Poyerekeza ndi ma buffer amtundu wa rabara, masika ndi ma hydraulic omwe amagwiritsidwa ntchito m'dziko lathu pano, ma buffers a polyurethane samangokhala ndi magwiridwe antchito apamwamba kwambiri, komanso amakhala ndi mphamvu yokoka yaying'ono, mawonekedwe osavuta, otsika mtengo, komanso kukhazikitsa kosavuta ndi kukonza.