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The Medela Harmony Diaphragm, Stem & O-Ring is a replacement / spare part for the Medela Harmony Breast Pump. It is assembled and ncludes the diaghragm, stem and o-ring parts. Product Number 800.0766 / 800.0846.
1 per pack.
Posted by Aranea C on 30th Aug 2011
I have had no problems structurally with this part, however I find sometimes the parts twist apart when in use and it can cause a loss of suction. But a minor thing, and it's integral to the operation of the pump, so it's not like you can go without it!