American (Ultra Flow) pump (Volute/Housing) Replacement o-ring. Same as (390060) Also Fits: See Product Features for more information! Also Fits: (Pentair/American Products, Ultra-Flow Pumps) (AquaFlo, Dominator Med & High Head Pumps) (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) & (Hayward Star-Clear Cartridge Filters-Models: C751, C900, C1200, C175, CF900S Quality TORK Replacement Part O'ring will arrive doubled over as shown in picture