... cold operation.Pressure of -0.1 ~ 6.4Mpa (Total Negative, to 64kgf/cm2) (Full vacuuming to 64kgf/cm2)Use the ... materials, insulation materials, anti-sticking coating, making the products can not be replaced. PTFE has an outstanding fine performance, high temperature ... of friction, wear, chemical corrosion, sealing good, not hydrolysis, do not harden excellent performance. Used to work in various media ...