1, Direct factory price 2, Products with much patents 3, 15 years experience of mechanical seal Operating limits:Pressure:0~2.5MpaTemperature:-20°C ~ 200°CRotating speed:≤20m/sMedium: Oil, water, salt, base, organic solvent and so on.Materials for rotating and ring: carborundum-carborundum, impregnating resin (metal) graphite-carborundum Unit:mmdd2d3(MIN)d3(MAN) ...