water pipe oring sealing NBR ShoreA50,60,70,80,90 black,white,red, ... NSF,FDA,WRAS,TZW,W270,UL Lead time15days Itemwater pipe oring for sealingDescriptionMaterial:NBR,EPDM,FKM,ACM,IIR,SiliconShoreA50,60,70 ... *34*34 cmNot-standard packing: follow customers' requirement water pipe oring for sealing