Stainless Steel Vertical Mechanical Seal 1)high quality 2)fast delivery 3)advance ... oil refining, petrochemical, pharmaceutical, food processing, pump,paper and waste water treatment and etc. Meterial Stainless Steel, SIC, TUNGSTEN CARBIDE ,CARBON GRAPHITE, PTFE ... the sealed chamber: -20°c˜ 150°cLinear Speed; ≤ 20m/Sec Stainless Steel Vertical Mechanical Seal