Spectra Baby USA BPA/DEHP-Free Backflow Protector Replacement Part Compatible with S2, S1, 9 Plus, or M1 Breast Pumps

My original one got melted in the sterlizer so in I ordered a new one. Do not sterlize this, it cannot handle high temperatures.

Great for spectra 1 and 2. I had both and these worked as great replacement parts. Much needed for longer term pumping. I typically switched these out every 3-4 months to help keep supply up

Works very well and a very nice quality!

I've had problems before when ordering replacement parts for my breast pump. For some reason, they can be slightly different from the original version, which means the parts don't fit together right or the pump doesn't work as well. Happily, this backflow protector worked just as well as the original parts. (I had to replace the previous part when it got mold inside that I couldn't scrub off.) It fits, and works perfectly well.

I bought a replacement as the generic one didn’t fit the best - it felt like maybe the suction wasn’t strong enough. But with this product it felt like the membrane that came with the pump.

Works perfectly!