... ageing resistance 2.Vacuum performance is good 3.Different size Flame Retardant O-Ring UsageMainly used for the automobile industry, because of ... .5.Different size and colorAbout us1.We have kinds of material : SBR,CR,NBR,HNBR,EPDM,SILICONE,VITON,NR,FFPM,etc ... us.Pictures for reference only, the price according to the material object.We usually do product according to customers` requirements. Contact ...