NM321Operating range:Medium: coal pulp, ore pulp, sewage, etc.Concentration: < 40%Pressure: <1.5MPaTemperature: <120℃Linear velocity: ≤10m/sStructure features:● The structure of the mechanical seal is double face integrated with inner shaft sleeve in sliding type transmitted by a drive ring, which prevents the impact of axial adjustment of the pump on the compression of mechanical seal in the course of installation.● Sealing cavity and tail-board shall be as open as possible to prevent pulp from accumulating around the sealing surface, in case that the mechanical seal will be invalid.● The flushing water does not affect the technologic process because it does not enter the media process.