KSB 80048580 is a mechanical seal reference with the designation M37G/..-00-R Q12Q4VGG1. The M37G 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 shrink-fitted sintered silicon carbide for the rotating face (Q12) and siliconized carbon for the stationary seat (Q4), 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.
