... ISO9001,SGS,ROHS Lead time:30 Day o ring binder & metal ring binder 1)Applicable material:Silicone,NR,NBR,SBR,EPDM,CR ... ,TPE,PVR,PC,PE,PP,PS,POM,PUR,PVC,PPTV,HIPS ... modify your enigine for race tolerances and performance. o ring binder & metal ring ...