KSB 00332403 is a mechanical seal reference with the designation M32N/..-00-R BSM1GG. The M32N belongs to the unbalanced pusher-seal family, using a rotating conical spring whose handed version must match the shaft rotation direction. The material code specifies resin-impregnated carbon graphite for the rotating face (B) and CrMo cast steel for the stationary seat (S), with PTFE-wrapped FKM secondary sealing elements (M1). The shaft diameter and installation dimensions must be confirmed against the pump before selecting a replacement. The corresponding KE MOTION HYDRO product reference is NT-2.