NBR,SILICONE,EPDM,SBR,HNBR 70 black and blue gasket Hardness:Shore40,50,60, ... Approved:NSF,FDA,WRAS,KTW,W270,UL, NBR,SILICONE,EPDM,SBR,HNBR 70 black and blue gasketDescription Material: SiliconeHardness:Shore40,50 ... *34 cmNot-standard packing: follow customers' requirement NBR,SILICONE,EPDM,SBR,HNBR 70 blue gasket with high quality approved NSF61,WRAS ...