Pentair Oring Diffuser Seal Gasket Square Quad Q4335 Square Oring Gasket, Factory Original Part OEM This gasket is like a cord ring or square ring it is not a traditional round oring. Used on Challenger Pumps that are marked as HF or High Flow. Mfg #: 355030 UPC Code: 788379701154Fits these pumps:Challenger HF High Flow Pump (Not used on 5 hp)Superflo VS Variable Speed PumpSuperflo Single & 2 SpeedPinnacle MH Medium Head PumpPinnacle HF High Flow PumpSuperMax VS Variable SpeedSuper Max Single & 2 speedSame as: Aladdin O-395, Jacuzzi 47-0036-03-R, SwimQuip 35515-1297, Pentair #: 35-5030Use with Challenger Diffusers: 355148, 355188, 355270, 355545

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