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