mechanical seal centrifugal pump 1:gasket,ring,bushing,flange 2:mechanical sealing parts,pump seal,auto seal 3: SIC mechanical seal burgmann (all photo is as the samples offered, there ... rubber impeller, ceramic seal, sic seal, stainless seal, and ssic seal) Stainless steel is featured with corrosion resistance, fatigue resistance, flexibility, high-press resistance, good ...