... Approved:NSF,FDA,WRAS,KTW,W270,UL,ACS,ROHS Itemwater food grade rubber gasketDescriptionMaterial: SiliconeHardness:Shore40,50,60,70,80,90Color: black ... ,green,yellow,blue,brown,orangeAdvantageAging resistance, high/low temperature resistance, acid/alkali resistance, abrasion resistance etc.SizeAS568, P.G Series, ISO ...