Itchieflymaterials:NR/CR/NBR/FKM/VITON/FPM/SIR/EPDM/ACM/PA/PU/PE/PTFE/ ... material and the detailed design.Materials: NBR, FKM/FPM/VITON,SIL,ACM,EPDM,H-NBR,NR,PA,PU,PE,PTFE,POM,PVC ... and specification are accepted. spring coil spacers/PU bush/PU cushion/red bule PU bush