food grade colorful o ring Hardness:Shore40,50,60,70,80,90 Approved:NSF,FDA,WRAS,KTW,W270,UL, food grade colorful o ringDescriptionMaterial: SiliconeHardness:Shore40,50,60,70,80,90Color: black,white,red,green,yellow,blue,brown,orangeAdvantageAging resistance, high/low temperature resistance, good electrical properties,color stability etc.SizeAS568, P.G Series, ISO 361/1and Customized ...