... ring ShoreA50,60,70,80,90 black,white,red,green,yellow,blue KTW,W270,DVGW Lead time15days Itemsealing o shape ringDescriptionMaterial ... ,ACM,IIR,SiliconShoreA50,60,70,80,90black,white,red,green,yellow,blueNSF,FDA,WRAS,TZW,W270,ULAS568,P.G.etc.AdvantageGood Ozone ...