


🍼 Seal the deal with Momcozy – leak less, pump more, stress less!
The Momcozy M6 Breast Pump Replacement Diaphragm (2PCS) is a BPA-free, food-grade silicone accessory designed exclusively for the Momcozy Mobile Style M6 wearable breast pump. Engineered to maintain a secure, leak-proof seal, it ensures hygienic, mess-free pumping. Easy to clean and safe up to 100℃, these original replacement parts support busy moms with reliable, high-quality performance.
















































| ASIN | B0CPJJHYYL |
| Additional Features | Wearable |
| Best Sellers Rank | #5,079 in Baby ( See Top 100 in Baby ) #55 in Electric Breast Pumps |
| Brand | Momcozy |
| Brand Name | Momcozy |
| Color | White |
| Customer Reviews | 4.1 out of 5 stars 670 Reviews |
| Manufacturer | Momcozy |
| Manufacturer Part Number | MS PJ |
| Material | Silicone |
| Material Type | Silicone |
| Model Number | MS PJ |
| Number of Items | 1 |
| Size | 2pcs Diaphragm |
| Special Feature | Wearable |
| UPC | 810123502103 |
| Unit Count | 1 Count |
O**O
Momcozy
These Momcozy replacement accessories fit perfectly and are made with good-quality materials. They were easy to install and worked just like the original parts. Everything sealed well, and I didn’t notice any loss of suction. They are easy to clean and a great value for the price. I would definitely recommend them to anyone who needs replacement parts for their Momcozy breast pump
A**L
Good replacement
These fit great!
J**J
Trash! Run, don’t walk away
I’ve had three of these flanges break in the past 10 days, and several more have broken previously. The exact same piece breaks off from attaching or detaching the flange from the bottle. I use them as directed and am not rough with them. I own multiple sets, so I only use each set three times a week for pumping at work. Despite this light use and continuously ordering new flanges, they continue to break. If I could go back, I would not choose the Momcozy M9 as my wearable pump. Based on my experience, I also wouldn’t recommend Momcozy to anyone looking for a breast pump. I’ve contacted Momcozy customer service for this and other issues (bottles always crack too), but the replacement process is always tedious, and shipping takes too long when you need replacement parts immediately. Save yourself the money and the frustration! Us pumping mamas deserve better 💪🏼
E**H
Free at last !
Wow! I'm in love !! I just used these for the first time so I can't speak to durability BUT I am thoroughly impressed. No leaking, easy assembly. It's just like my spectra pump (basically) let me start by saying I am very chesty at DDD bra, and was concerned about suction. Zero issues! I just place them in my bra and wear a tank top over. I use these in conjunction with my LaVie massagers and we're in business! Great let down. ALSO they included a little nipple measurement tool which I loved. I was able to accurately measure! I'm pretty sure I've been using the wrong size this whole time (my baby is now 5 months) I am curious to know how long the batteries last. I was just so excited to use these that I didn't pay attention to the time. It usually takes me 40 min and this did not feel like 40mins at all! I'm free from the wall! I actually have my hands back for hours each day. I'm so excited! Thank you for this product, it's a life saver
E**Y
Best portable pumps
Love these, got when my baby was 2 months and used for 6 months, plan to use again with baby #2. I got more milk out of these pumps than I ever did with my spectra plug in pump. Super easy to use on the go, I pumped a ton in the car and would just have a bottle ready to go if you don’t prefer to breastfeed in public. Just get cheap flange inserts to fit your size if you’re not the standard 24mm the pumps all come with!
R**G
Good replacement, just needs some care
The Momcozy M9 in general is a fantastic portable breast pump. The flange is great and very comfortable to use - however it's a pain to attach and re-attach the duckbill valve. Basically, if you pull it straight out, it will compromise the plastic clips that hold the duckbill and the collection cups, hence why the negative reviews, and hence why it breaks all the time. We've had our fair share of this problem. On the box, there is no instructions as to how to put this together. The instructions, come to find out, are on the Momcozy app. To remove the duckbill valve correctly, spin it about 45 degrees so that its angled, and you can then pull straight down, as it should be easier to detach from there. After doing this method, our flange survived for more than 6 months (compared to three weeks). Even with this method, the plastic bits do wear out overtime, but like most breast pump attachments, you should be changing these out occasionally. That being said, because the Momvozy M9 is our workhorse every day, I make sure I buy one of these to act as a spare.
J**N
I absolutely love this breast pump!
I’m 1 month pp and I’ve been trying to find a good handsfree portable pump I decided to get this pump because I’ve been so many good videos and reviews about it and just had to try it. Safe to say I absolutely love this pump I received it yesterday and have already used it 6 times. This pump has great suction and has definitely helped increase my milk output! I’m an under supplier and normally just get a little over an ounce a pump and roughly 3oz for my morning pumps. When I used this for my morning pump I got a little over 4 inna half ounce which hasn’t happened before I got 2.5oz on my right and a little over 2 on my left I normally only get 1oz on my left for my morning pump!
K**E
Quality Control Needed
Like other reviews have mentioned, the same plastic piece breaks off time and time again even when used correctly from snapping and unsnapping it to the collection cups. However, usually when it breaks off I’ve been using the parts for 3-4 months, so in my mind, it’s time to swap them out for fresh parts anyways. Otherwise, I love my M9 because it empties me as effectively as my Spectra while being fully enclosed and hands-free which is super helpful at work.
C**O
Buena opción
Funcionan de maravilla, la duración de la pila es muy buena y las velocidades de succión funcionan de maravilla.
R**L
Excelente
Super producto para mamás. Sacan mucha leche y son fáciles de usar. Muy buena calidad.
E**A
Pésimo servicio
El producto me funciona pero tardo demasiado en llegar además pedí en color rosa y llegó blanco
A**A
Sirven bien por poco tiempo nadamas
Sirvió muy bien 3 semanas, después de eso uno dejó de sacar leche, creo que es la valvulita que trae :(
A**A
Perfect
First my mom cozy and my Medela. Perfect
Trustpilot
2 weeks ago
1 month ago