AquaFlo (Dominator) Med or High Head Pump (Seal Plate/Housing/Volute) Replacement O-Ring. Same as: (O-240) & (92200180) See Product Features for more fits! Also Fits: (Pentair/American Products, Ultra-Flow Pumps) (AquaFlo, Dominator Med and High Head Pumps) (Hayward Star-Clear Cartridge Filters-Models: C751, C900, C1200, C175, CF900S (Pentair/Sta-Rite, Max-E-Pro Series, Max-E-Glas II, Dura-Glas II, Max-E-Glas, Dura-Glas Pumps) (Sonfarrel/Martec, Pool Master Pumps)