It would be better to use sintered pressureless silicon carbide as new material for Pump.
Pump mechanical seal is installed in the pump equipment in the dynamic seal from the device to avoid the pump volute in the fluid medium through the pump shaft out of a component outside the pump. Because the pump is mostly conveying the fluid medium, with the horizontal installation, high speed, high pressure, with solid particles, corrosive and so on, so the pump mechanical seal body material often need to resist the solid particles of erosion impact, high speed to bring the seal Surface high temperature abrasion, high pressure to bring the sealing parameters of instability, corrosion of the substrate structure and other unfavorable factors, the mechanical seal sealing material requirements are higher, usually sealing surface friction optional materials are nickel-based carbide, cobalt Based carbide, pressureless sintered silicon carbide, reactive sintered silicon carbide, dip metal graphite, PTFE filled graphite, PTFE filled glass fiber, aluminum oxide special ceramics, etc .; base material optional 2Cr13 Stainless steel, 316 stainless steel, 316L stainless steel, 904L stainless steel, PTFE and so on; spring compensation pieces optional material for Hastelloy, 1Cr18Ni9Ti, 3Cr13 and so on.