This is for DYSON Ball Multi Animal DC24 DC24i Cyclone Bin Foam Seal Gasket ADY10 This is the gasket seal that is accessed by splitting the cyclone. Sometimes these degrade and cause cyclone leakage and thus suction loss. Sometimes when you split a cyclone for cleaning, the old one is unusable rendering the cyclone effectively scrap. However, we now sell the replacement cyclone gasket seals here.