The Ameda replacement locking rings and caps can easily be added to your breastfeeding setup to replace parts without missing a beat. The locking ring and disc work together to seal the breast milk collection container, helping to prevent spills. These discs are only compatible with Ameda HygieniKit Milk Collection System 4 oz. bottles. Please note: the HygieniKit replacement locking rings and caps are only compatible with breast pumps that use the HygieniKit Milk Collection System, not pumps that use the Mya Milk Collection System.

COMPATIBLE WITH: Platinum Multi-User Hospital Breast Pump, Ameda Elite Multi-User Breast Pump, Ameda Mya Joy Breastpump, Ameda Finesse Breast Pumps, Ameda Purely Yours Breast Pumps, HygieniKit Milk Collection System, 4.0oz Collection Containers.