water pipe oring sealing NBR ShoreA50,60,70,80,90 black,white,red,green,yellow,blue NSF,FDA,WRAS,TZW,W270,UL ... Lead time15days Itemwater pipe oring for sealingDescriptionMaterial:NBR,EPDM ... ,FKM,ACM,IIR,SiliconShoreA50,60,70,80,90black,white,red,green,yellow,blueNSF,FDA ...