... food industry,sewage-disposal industry,steel industry,semi-conductindustry and so on.Applied equipment:mechanical sealing,pressure vessel,gas ... compressor,reaction vessel,heatexchanger,boiler,filter and so on.Main advantage:First,excellent anti-chemical ... good.Four,long service life.Material:NBR,FFKM,VMQ,PTFE,PU and so on (according to your requirements )Operation conditions ...