KSB 00515420 is a mechanical seal reference with the designation M3N13/..-00-R SBVGG. The M3N13 belongs to the unbalanced pusher-seal family, using a rotating conical spring whose handed version must match the shaft rotation direction. The specified material combination includes CrMo cast steel for the rotating face (S) and resin-impregnated carbon graphite for the stationary seat (B), with FKM secondary seals (V). 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.
