Feature: This type of cartridge mechanical seals are designed for special purose that the seals can not work by flushing devices. Besides the advantages and functions of HFJ318I, the thin and light flange design assure they can be applied for the fluid with corrodibility, thin-abrasiveness and clog. Technical Parameters: Max Pressure: 25kg/cm2 Max Temperature: 220 centidegree(for Viton O-rings) 320 centidegree(for Kalrez O-rings) Speed: 20m/s Application: Water system, Petrochemical system Shaft:25-100mm(diameter) 1"-4"(diameter)