... specially produce the o-ring,x-ring.rubber parts 2. Material: FFKM,NBR, HNBR,EPDM,SI,FKM(VITON)CR,PU,PTFE ... ,ACR(A) 1. material:NBR,EPDM,SI,FKM(V270M),CR,SBR,IIR,HNBR,ACM ... : 51% - 60% Current Export Market: North America,South America,Western Europe,Eastern Europe,Eastern Asia,Southeast Asia,Mid East Factory Size In Square Meters ...