Flat o ring 1.Silicone FKM FPM VITON A VITON B GF GFLT GLT AFLAS HNBR... 2.High price performance ratio ... Item nameFlat o ring MaterialSilicone,,FKM,FPM,VITON A, VITON B, GF,GFLT,GLT,AFLAS,HNBR... ColorRed, blue, pink,white, black ... , weather resistance and aging resistance. 3.Operating Temperature: -20°C~+200°C.4.Application: Mainly used for vacuum resistance, high temperature resistance ...