Silicone Diaphragms (FOR FLANGES ONLY)

Finally, no more milk backing up into the tubing—these diaphragms seal perfectly over the flange, and the silicone is soft enough to sit flush without any annoying gaps.

These fit snugly over the flange and the little membrane does exactly what it should—no surprise milk backing up into the tubing after pumping. I've washed and reused mine several times now and they still hold their shape perfectly.