... are available. 2. Good quality and reasonable price FDA grade silicone seal pads:Applied industry:extensively used in all kinds of ... mechanical sealing,pressure vessel,gas compressor,reaction vessel,heatexchanger,boiler,filter and so on.Main advantage:First,excellent anti-chemical character ... °C)Third,anti- compressibility function is very good.Four,long service life.Material:NBR,FFKM,VMQ,PTFE,PU and so ...