... ,DVGW Lead time15days Itemsealing o shape ringDescriptionMaterial:NBR,EPDM,FKM,ACM,IIR,SiliconShoreA50,60,70,80,90black,white,red,green,yellow ... PFOS commands. Partial meet PAHS,NP requirement.NBR,EPDM,FKM,ACM,IIR,Silicon rubber etc. are available.Material usage is based ...