Durceler 22mm Silicone Flange Inserts – 22mm Tunnel Reduction for 24–25mm Shields

Overview

Durceler 22mm silicone flange inserts are a practical, two‑piece solution designed to adapt larger breast shields to a narrower tunnel. Made from BPA‑free silicone, these inserts fit inside compatible shields to create a 22mm tunnel. The result is a tighter, more tailored fit when you’re using common shield sizes from brands like Medela, Spectra, Elvie, Momcozy, and more, including Freemie cups. This simple addition is described as a versatile option for users who want a more precise tunnel diameter without changing the shield itself.

Beyond the basic sizing change, the inserts are lightweight and durable, making them suitable for regular pumping sessions. They are designed to work with a range of 24–25mm shields and cups, helping you maintain a comfortable fit as you pump.

Compatibility and Fit

The Durceler 22mm inserts aim to help you pair a familiar shield with a narrower tunnel. They are intended to be used with popular shield models and brands that sit around 24–25mm in diameter, including, but not limited to, the following:

• Medela, Spectra, Elvie shields (S1, S2, S18, S21) and other 24mm shields
• Momcozy S9/S12 shields, TSRETE, Bellababy, NCVI 24mm shields
• Freemie 25mm cups requiring a 22mm tunnel conversion
• Compatibility with most 24–25mm shield models from various brands

For best results, consider measuring the base of the nipple before pumping. A typical post‑pumping nipple diameter around 20–21mm and a base circumference of about 56.52–62.80mm can help you assess whether the 22mm tunnel may suit your setup.

Real‑life Scenarios and Benefits

Many users find that a tighter tunnel can change how the shield seats against the skin, potentially affecting comfort and the feel of the pump session. This insert can be particularly useful for those who use larger shields but want a narrower tunnel without purchasing an entirely new shield. It may also be helpful for users who rely on hands‑free pumping with compatible bras, as the insert stays in place inside the shield during use.

• Comfort focus: a closer tunnel can feel more secure for those using larger shields
• Practical versatility: works with a broad set of shield brands and models
• Handsfree compatibility: supports common handsfree bra configurations when used with compatible shields

Keep in mind that experiences vary, and the insert is presented as a flexible option rather than a guaranteed outcome. The goal is to offer a fit that might align better with your shield size and nipple measurements.

Care, Maintenance, and Replacement

The inserts are designed for regular use and easy maintenance. To keep them in good condition, follow these guidelines:

• Replace every 4–12 weeks, depending on duration and frequency of pumping sessions
• Clean with mild soap and warm water; avoid harsh chemicals or abrasive cleaners
• Ensure the insert sits fully inside the shield by gently squeezing into place during assembly
• Like all silicone components, they are BPA‑free and designed for repeated use

With proper care, the inserts are built to be durable and comfortable, helping you maintain a consistent shield fit over time.

Summary

Durceler’s 22mm silicone flange inserts offer a straightforward way to customize the tunnel diameter of many 24–25mm shields. They’re lightweight, BPA‑free, and designed for flexible compatibility across a range of brands. While not a guaranteed outcome, users may experience a more secure fit with the right shield combination and measurement approach.