---
product_id: 451905125
title: "18mm Silicone Flange Inserts Compatible with Medela/for Spectra S1 S2 / Elvie / S18 S21 / Momcozy S9 S12/ TSRETE 24mm Breast Pump Shields or Freemie 25mm; Reduce Tunnel Down to 18mm"
brand: "durceler"
price: "506 Lei"
currency: RON
in_stock: true
url: https://www.desertcart.ro/products/451905125-18mm-silicone-flange-inserts-compatible-with-medela-for-spectra-s1
store_origin: RO
region: Romania
---

# Reduces nipple tunnel from 24/25mm to 18mm Seamless compatibility with top pump brands BPA-free, safe & durable silicone 18mm Silicone Flange Inserts Compatible with Medela/for Spectra S1 S2 / Elvie / S18 S21 / Momcozy S9 S12/ TSRETE 24mm Breast Pump Shields or Freemie 25mm; Reduce Tunnel Down to 18mm

**Brand:** durceler
**Price:** 506 Lei
**Availability:** ✅ In Stock

## Summary

> 🍼 Perfect fit, maximum flow — because your comfort deserves the upgrade!

## Quick Answers

- **What is this?** 18mm Silicone Flange Inserts Compatible with Medela/for Spectra S1 S2 / Elvie / S18 S21 / Momcozy S9 S12/ TSRETE 24mm Breast Pump Shields or Freemie 25mm; Reduce Tunnel Down to 18mm by durceler
- **How much does it cost?** 506 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/451905125-18mm-silicone-flange-inserts-compatible-with-medela-for-spectra-s1)

## Best For

- durceler enthusiasts

## Why This Product

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

## Key Features

- • **Comfort Meets Safety:** Crafted from BPA-free silicone to protect sensitive skin and prevent nipple trauma during pumping.
- • **Handsfree Bra Friendly:** Designed to maintain compatibility with most handsfree bras, empowering multitasking moms on the go.
- • **Universal Compatibility:** Works flawlessly with Medela, Spectra, Elvie, Willow, Momcozy, Freemie, and more—no brand left behind.
- • **Maximized Milk Expression:** Ensures a perfect seal and fit, boosting milk output while reducing irritation and discomfort.
- • **Precision Fit for Small Nipples:** Transforms large 24/25mm shields down to a snug 18mm tunnel for optimal comfort and efficiency.

## Overview

Durceler’s 18mm silicone flange inserts reduce standard 24-25mm breast pump shields to a precise 18mm nipple tunnel, enhancing comfort and milk expression for small-nippled mothers. Made from BPA-free silicone, these durable inserts are compatible with leading pump brands like Medela, Spectra, Elvie, and Freemie, and maintain handsfree bra compatibility for seamless, efficient pumping sessions.

## Description

18mm Silicone Flange Inserts Compatible with Medela/for Spectra S1 S2 / Elvie / S18 S21 / Momcozy S9 S12/ TSRETE 24mm Breast Pump Shields or Freemie 25mm; Reduce Tunnel Down to 18mm

## Features

- Durceler 18mm inserts (2pcs a Pack) to compatible with Medela / Spectra / Elvie / Willow / Momcozy / TSRETE / Bellababy / NCVI 24 mm breast shields. It will reduce the 24mm shield nipple tunnel down to 18mm. Also compatible with Freemie 25mm cups to reduce it down to 18mm. Also applicable to most other brands of the models for 24-25mm.
- Seamless Compatibility For Optimal Milk Expression: Suitable for nipple diameter 16-17mm(after a pumping session), or measure the circumference of nipple base about 43.96 - 47.10mm before a pumping session.
- Great solution for small-nippled mothers using large breast shields, Proper nipple tunnel fit is essential for comfort and efficient milk output. It can be compatible with Spectra and Medela (Freestyle, Harmony, Sonata, and Swing-Maxi pumps) and other brands.
- BPA free, made of silicone material. Durable, clear, and comfortable. This accessory helps breast shields for more effective pumping and maximized milk expression while helping to avoid nipple trauma or irritation.
- Maintain compatibility with most handsfree bra. You can use most handsfree bra cups with they original 24/25mm detachable shields having this insert inside. During operation, you need to squeeze slightly to make the Insert fully fit with the shield to achieve the perfect effect.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Units | 2.0 count |
| Brand | Durceler |
| material_composition | BPA Free |

## Product Details

- **Brand:** Durceler
- **Special features:** Portable, Lightweight
- **Material:** Silicone
- **Power source:** Manual
- **Included components:** Breast Flange

## Images

![18mm Silicone Flange Inserts Compatible with Medela/for Spectra S1 S2 / Elvie / S18 S21 / Momcozy S9 S12/ TSRETE 24mm Breast Pump Shields or Freemie 25mm; Reduce Tunnel Down to 18mm - Image 1](https://m.media-amazon.com/images/I/413W40kuafL.jpg)
![18mm Silicone Flange Inserts Compatible with Medela/for Spectra S1 S2 / Elvie / S18 S21 / Momcozy S9 S12/ TSRETE 24mm Breast Pump Shields or Freemie 25mm; Reduce Tunnel Down to 18mm - Image 2](https://m.media-amazon.com/images/I/61w4k7+Yp4L.jpg)
![18mm Silicone Flange Inserts Compatible with Medela/for Spectra S1 S2 / Elvie / S18 S21 / Momcozy S9 S12/ TSRETE 24mm Breast Pump Shields or Freemie 25mm; Reduce Tunnel Down to 18mm - Image 3](https://m.media-amazon.com/images/I/71Wgo7W7WqL.jpg)
![18mm Silicone Flange Inserts Compatible with Medela/for Spectra S1 S2 / Elvie / S18 S21 / Momcozy S9 S12/ TSRETE 24mm Breast Pump Shields or Freemie 25mm; Reduce Tunnel Down to 18mm - Image 4](https://m.media-amazon.com/images/I/71tayCOrpML.jpg)
![18mm Silicone Flange Inserts Compatible with Medela/for Spectra S1 S2 / Elvie / S18 S21 / Momcozy S9 S12/ TSRETE 24mm Breast Pump Shields or Freemie 25mm; Reduce Tunnel Down to 18mm - Image 5](https://m.media-amazon.com/images/I/613qiWCYAWL.jpg)

## Questions & Answers

**Q: Does it work with the Elvie stride**
A: yes, it's fit for 24-25mm flanges of the Elvie stride

**Q: Does this work with mommed wearable pump?**
A: yes, it's ok for 24-25mm flanges work with mommed wearable pump

## Frequently Bought Together

- Durceler 18mm Silicone Flange Inserts Compatible with Medela/for Spectra S1 S2 / Elvie / S18 S21 / Momcozy S9 S12/ TSRETE 24mm Breast Pump Shields or Freemie 25mm; Reduce Nipple Tunnel Down to 18mm
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- Momcozy Hands Free Pumping Bra, Adjustable Breast-Pumps Holding and Nursing Bra, Pumping & Nursing Bra in One

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-01*