Flygt 6415000 is an OEM reference for a mechanical shaft seal. The listed Flygt pump applications include 2151.010, 3126.090/.180, 2084, 2135, 2151.011/.050, 3127, 4440, 5530, 2201.430/.320/.480/.590/.690, 2610 and 2620. The Flygt Basic Repair Kits cross-reference also lists this OEM number as the primary/inner seal for pump 2670.180. The corresponding KE MOTION HYDRO product reference is NV FLC.