bellow mechanical seal 1.MATERIAL:S.S. 2.DN6-8000,LENGTH AS YOU ... air, SO2, steam, water, oil, acid, gas and etc. Advantage:High temperature resistanthigh pressure resistantanti-corrosionLonger working expectationcorrugated pipewith flangeNon-standard ... .Update Date:2011-4-3 16:01:59 bellows mechanical seal