KSB 80047109 is a mechanical seal reference with the designation MG1/..-G6 Q1Q4VGG. The MG1 design uses rotating elastomer bellows together with a G6 stationary seat. The specified material combination includes sintered silicon carbide for the rotating face (Q1) 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 NM-1.