Hot-selling silicon rings 1100 % silicon 2 Soft, non-toxic ,colourful 3 EN71 and ROSH pass 4 Short production cycle nameHot-selling silicon O- ringColourany pantone colourMaterial100% siliconeWeight2.5 to 3.7g/piece Size60*12*2mm or 100*12*2mm .ectSampleavailableMOQ1000Pcs designFeature1)high quality and reasonable price2)material passes SGS.3)neither harmless to environment nor body4)logo design ...