---
product_id: 393901525
title: "S9/S12/S9pro/S12pro Duckbill Valve and Silicone Diaphragm, Compatible with NaNaLazy/TSRETE/momcozy, Wearable Breast Pump Replacement Parts Accessories (4 Piece Set)"
brand: "bliblo"
price: "€ 13.95"
currency: EUR
in_stock: true
reviews_count: 13
category: "Bliblo"
url: https://www.desertcart.hr/products/393901525-s9-s12-s9pro-s12pro-duckbill-valve-and-silicone-diaphragm-compatible
store_origin: HR
region: Croatia
---

# 17mm precision fit BPA-free silicone Faster pumping time S9/S12/S9pro/S12pro Duckbill Valve and Silicone Diaphragm, Compatible with NaNaLazy/TSRETE/momcozy, Wearable Breast Pump Replacement Parts Accessories (4 Piece Set)

**Brand:** bliblo
**Price:** € 13.95
**Availability:** ✅ In Stock

## Summary

> 🍼 Pump like a pro with the perfect fit every time!

## Quick Answers

- **What is this?** S9/S12/S9pro/S12pro Duckbill Valve and Silicone Diaphragm, Compatible with NaNaLazy/TSRETE/momcozy, Wearable Breast Pump Replacement Parts Accessories (4 Piece Set) by bliblo
- **How much does it cost?** € 13.95 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/393901525-s9-s12-s9pro-s12pro-duckbill-valve-and-silicone-diaphragm-compatible)

## Best For

- bliblo enthusiasts

## Why This Product

- Trusted bliblo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safe & Pure:** Crafted from BPA-free, food-grade silicone for worry-free feeding.
- • **Universal Compatibility:** Seamlessly fits most 24mm wearable breast pumps including Medela & Momcozy.
- • **Pump Smarter, Not Harder:** Reduces pumping time by enhancing suction efficiency.
- • **Comfort Meets Convenience:** Soft, painless design that’s dishwasher safe and easy to clean.
- • **Perfect Fit, Maximum Output:** 17mm inserts tailor your pump for optimal milk flow and comfort.

## Overview

This 4-piece set of 17mm flange inserts is designed to convert standard 24mm wearable breast pump shields into a more efficient, comfortable size. Made from BPA-free silicone, these inserts enhance milk production by improving suction and reducing pumping time. Compatible with leading brands like Medela, Momcozy, and TSRETE, they offer a universal, safe, and easy-to-clean solution for modern breastfeeding moms seeking comfort and efficiency.

## Description

desertcart.com : bliblo 4pcs Flange Insert 17mm,Compatible with Medela/TSRETE/momcozy,BPA Free Silicone Insert for Wearable Breast Pump Shield/Flange Insert，Milk Collector 24mm Universal : Baby

Review: Great - I read a few bad reviews but I needed something for my wearable pump so I took a chance with these. They fit the Missaa wearable pump you can get on desertcart and do the job. Pumping was kinda painful but now is not. They’re soft and fit in my silicone flanges great. I highly recommend measuring yourself and getting the right flange/insert size for you. It makes a world of difference and can help you continue your pumping journey. These were a lifesaver for me!
Review: Was nervous at first - I was so nervous to order these. From the photo I had no idea how it would fit on my momcozy. I ordered them anyways because the momcozy size I had was way too big and hardly got any milk. Getting the right size flange is a HUGE deal in pumping and helping you produce more milk. (Be sure to get measured at the hospital after baby and they'll help you get the right size!) But this product came in and is great quality. It was easy to assemble to my momcozy and was seamless (you can hardly notice I added them to the inside). They were the correct size for what I needed and helped create a stronger suction! The only downfall is it's one more thing to take off and remove but soooo worth it for having the right size flange.

## Features

- High Compatibility:This flange insert accessory set (17mm, ) is designed for most 24mm wearable breast pumps, compatible with brands like Momcozy. These inserts reduce the 24mm shield nipple tunnel to the correct size, not compatible with 27-28mm shields. Using these flange inserts can enhance pumping efficiency, reduce pumping time, and maximize milk production
- They are suitable for use with most wearable breast pumps (except for the 27mm shield). Compatible with Momcozy S9/S9 Pro/S10/S12/S12 Pro/TSRETE/Medela/Spectra/Opnmina/Elvie/Willow/Bellaaby/Motif Luna/Ameda/MOMMED/MYA/Ainsir/Phanpy/Lulia/NaNaLazy/Luxlady/kidzio/eulumap/Teexin/Fisroa/KISSBOBO/Goldeep/BIOBOO/Mumeasy/Nanawaw
- Safe and Easy to Clean：These flange inserts are made of food-grade liquid silicone, BPA-free, ensuring all parts in contact with breast milk are safe. After each use, clean the breast pump parts with warm soapy water and rinse thoroughly, then sterilize using boiling water or steam at approximately 100°C (212°F). It is recommended to replace the inserts every 2 months to maintain optimal function.
- Comfortable and Efficient：These inserts are made of soft, comfortable silicone designed to stimulate milk flow and increase comfort during use. By reducing pain and increasing milk production, these inserts are essential for any breastfeeding mother who needs to pump. The size of the flange inserts is crucial for comfortable and efficient pumping. Choosing the right size can reduce discomfort and improve pumping efficiency.
- Thoughtful Service:Provides 24-hour customer support. Free replacement if the size is not suitable.If you have any questions, please contact us.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09N8NVJK7 |
| ASIN  | B09N8NVJK7 |
| Additional Features | Bpa Free,Wearable, Painless |
| Best Sellers Rank | #22,964 in Baby ( See Top 100 in Baby ) #309 in Electric Breast Pumps |
| Brand Name | bliblo |
| Color | 17mm-flange |
| Customer Reviews | 4.3 4.3 out of 5 stars (2,227) |
| Date First Available  | December 8, 2021 |
| Included Components | Breast Flange |
| Is the item dishwasher safe? | Yes |
| Item Weight | 200 Grams |
| Item model number  | 17mm |
| Manufacturer | bliblo |
| Manufacturer  | bliblo |
| Manufacturer Part Number | 17mm |
| Material Type | Silicone |
| Material Type Free | BPA Free |
| Model Number | 17mm |
| Number of Items | 3 |
| Package Dimensions  | 4.61 x 4.06 x 2.13 inches; 7.05 ounces |
| Product Style | Universal |
| Size | 4 Piece Set - 17MM Flange Insert |
| Unit Count | 4.0 Count |

## Product Details

- **Brand:** bliblo
- **Included Components:** Breast Flange
- **Material:** Silicone
- **Material Type Free:** BPA Free
- **Special Feature:** Bpa Free,Wearable, Painless

## Images

![S9/S12/S9pro/S12pro Duckbill Valve and Silicone Diaphragm, Compatible with NaNaLazy/TSRETE/momcozy, Wearable Breast Pump Replacement Parts Accessories (4 Piece Set) - Image 1](https://m.media-amazon.com/images/I/51vSju6IU7L.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great
*by T***R on September 26, 2022*

I read a few bad reviews but I needed something for my wearable pump so I took a chance with these. They fit the Missaa wearable pump you can get on Amazon and do the job. Pumping was kinda painful but now is not. They’re soft and fit in my silicone flanges great. I highly recommend measuring yourself and getting the right flange/insert size for you. It makes a world of difference and can help you continue your pumping journey. These were a lifesaver for me!

### ⭐⭐⭐⭐⭐ Was nervous at first
*by A***Y on September 29, 2023*

I was so nervous to order these. From the photo I had no idea how it would fit on my momcozy. I ordered them anyways because the momcozy size I had was way too big and hardly got any milk. Getting the right size flange is a HUGE deal in pumping and helping you produce more milk. (Be sure to get measured at the hospital after baby and they'll help you get the right size!) But this product came in and is great quality. It was easy to assemble to my momcozy and was seamless (you can hardly notice I added them to the inside). They were the correct size for what I needed and helped create a stronger suction! The only downfall is it's one more thing to take off and remove but soooo worth it for having the right size flange.

### ⭐⭐⭐⭐⭐ Worked with Momcozy pumps
*by A***R on January 14, 2022*

I’m a breastfeeding/pumping momma who purchased a Momcozy pump and has a bit of elastic nipples. The size 24 flange I think runs a little big and it has a short “tunnel” so my nipple was getting pulled back far and getting pinched in the top while causing pain and loosing suction. I tried a Maymom insert and cut it to fit bit no luck. I tried the beaugen which worked a but was annoying. Sticky, never really adjusted to the correct size (always loose) and turned an ugly yellow color. I tried these and was worried they wouldn’t work because it covers the suction hole. But they worked! It covers the suction while but there is still room between the suction and the insert so it doesn’t effect output. I was so happy they worked I cried! This is the only insert that worked for me and my Momcozy pump. Saved my pumping journey especially now that I EP. In another review I saw that their insert stuck out a bit but mine goes all the way in. The first two weeks it’s snug and you have to gently push it in or even fold it a bit and flatten it out in the Momcozy pump. Over time it “molds” and slides in perfectly.

## Frequently Bought Together

- bliblo S9/S12/S9pro/S12pro Duckbill Valve and Silicone Diaphragm, Compatible with NaNaLazy/TSRETE/momcozy, Wearable Breast Pump Replacement Parts Accessories (4 Piece Set)
- Momcozy Original S9 Pro/S12 Pro Replacement Accessories, Only Compatible with Momcozy S9 Pro/S12 Pro Breast Pump NOT for S9/S12 (Single-Sealed Full Set Collector Cup with 24mm Flange,180ml, 1 Pack)
- Momcozy Flange Insert 21mm Compatible with 24mm Flange/Shield of Most Pumps, Insert for Breast Pump Replacement Accessories, 4PCS 21mm

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-04-25*