FOBX 多彈簧推進式平衡式機械軸封,產品符合DON24960,ISO3069,ANSI B73.1.固定環可搭配"AB" =FOBB,"AF"=FOBF
"AB" SEAT RING 16kg/cm2 (230 PSI)
"AF" SEAT RUNG 30kg.cm2 (440 PSI)