PumpMom-us Replacement Silicone Membrane for Spectra S2 S1 and 9 Plus Breast Pump Backflow Protector and Maymom Backflow Protectors, Not Original Spectra S2 Accessories or Pump Parts (4pc)
$8.50
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Price: $8.50
(as of Nov 15, 2025 16:48:51 UTC – Details)
From the brand
PumpMom-us is an innovator, designer and manufacturer of breastfeeding, bottle feeding products. We strongly hope to create seemingly insignificant products that help simplify parents’ lives while preserving their personal style.
We are a brand that you can trust 100% because we stand behind our products. Responsible achievement of this goal is at the core of everything we do.
Flex Flange Part for Spectra
Breast Flange Part for Spectra
Tubing, Duckbill Valves
Silicone Pump Part for Spectra
Other Accessories
Other Accessories
Product Dimensions : 0.24 x 4.72 x 4.72 inches; 1.09 ounces
Manufacturer recommended age : 3 years and up
Item model number : PM-1019
Date First Available : July 6, 2019
Manufacturer : PumpMom
ASIN : B07TZZ9FT9
Best Sellers Rank: #21,337 in Baby (See Top 100 in Baby) #295 in Electric Breast Pumps
Customer Reviews: 4.7 4.7 out of 5 stars 1,871 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
COMPATIBLE MODELS – 4 Replacement Silicone Membranes Compatible with Spectra Backflow Protectors and Nenesupply Backflow Protectors.
COMPATIBILITY: replacement pump parts for Spectra S2, S1, 9 plus, M1, Dew 350 pumps and Motif Luna.
THIS IS AFTERMARKET PART MADE BY PumpMom. Not Original, Compatible with Spectra S2 Accessories.
SAFE MATERIAL – PumpMom membrane made of food grade materials that do not contain BPA.
PumpMom membranes are produced strictly according to professional standards, the stronger suction draws out more milk, and the membrane design prevents backflow.
8 reviews for PumpMom-us Replacement Silicone Membrane for Spectra S2 S1 and 9 Plus Breast Pump Backflow Protector and Maymom Backflow Protectors, Not Original Spectra S2 Accessories or Pump Parts (4pc)
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$8.50
C. Rodriguez –
Just Like Spectra
As a full time pumping mom, I replace these frequently! They are just like the one from Spectra (I have a Spectra 2) and they never let me down!
M.Petty –
Great replacement parts
These diaphragms fit a Spectra S2 pump perfectly and perform just as well and the factory ones. Pleasantly surprised and came quicker than ordering anywhere else!
Jessica M –
Compatible with Spectra!
I’m an exclusive pumper so I regularly need to change my pump parts. I order theres backflow protectors to replace every 2 months and they are perfectly compatible with my Spectra 1 which would be the same for the S2!
Youngnvibrant –
Nice Spectra Dupe!!
This is a nice spectra dupe and not as expensive as it spectra parts. It works the same I have no complaints! I will purchase again in the future.
D.D. –
Spectra 2 user: Will buy again!
I have purchased these multiple times from multiple sellers. I typically shop around for whatever the best price is at that time. These happen to be a few cents cheaper than anyone else, so they won this time around. They fit the Spectra parts well, great fit, and all of them have worked so far. I pump daily, so I change my silicone valves and back flow protectors every 5-6 weeks when I notice my output decrease (WHY ISN’T THIS COMMON KNOWLEDGE?!). They’ve worked great week 1. I’ll update if something goes wrong. Happy pumping mamas!! <3
Lindsay –
Great quality at a great price!
Love these! They’re way cheaper then actual spectra parts and they’re the same great quality! I have to replace my pump parts every two months as I pump every day multiple times a day, so it’s great that I have a cheaper option that is still great quality! If you have a spectra pump and want to save money, go with these!
Anmlvr –
Much thicker than original
I ordered these as a replacement for my spectra s2 & motif Luna pumps. They feel very sturdy & high quality, and seem to improve the suction of my pump. The biggest complaint I have is that they are thicker than the originals, and therefore the backflow protector doesnt like to stay together. The back will fall off, losing suction, and defeating the purpose. I purchased two sets of these and through away my originals. I’m not sure I would purchase again
Trista Blackwell –
Same as name brand
These work the same as they name brand for my pump.