red rubber valve Material: silicone Hardness:Shore40,50,60,70,80,90 Approved:NSF,FDA,WRAS,KTW,W270,UL, ... ,ROHS Itemred rubber valve DescriptionMaterial: SiliconeHardness:Shore40,50,60,70,80,90Color: black,white,red,green,yellow,blue,brown,orangeAdvantageAging resistance, high ...