Dr. Brown'sTM カスタムフローTM 両電動搾乳器または手動搾乳器用メンブレン

Finally got a spare set so I don't have to panic if one goes missing mid-pump session. These fit snugly into the closed-system housing and create a solid seal, no leaks so far. Glad I grabbed extras since they're tiny and easy to lose.

Losing one of these little discs meant my pump was useless, so I was relieved these fit the closed-system setup without any fuss. They're the exact same firmness as the originals, so suction feels just as strong as day one.

These fit perfectly and the closed-system design gives me peace of mind that nothing is getting into the milk. I just wish they came in a two-pack since they're so easy to misplace when you're washing pump parts.