{"product_id":"durceler-18mm-silicone-flange-inserts-convert-24-25mm-shields-to-18mm-medela-spectra-elvie-freemie","title":"Durceler 18mm Silicone Flange Inserts – Convert 24\/25mm Shields to 18mm (Medela, Spectra, Elvie, Freemie)","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eDurceler 18mm silicone flange inserts are designed to adapt standard 24mm–25mm breast shields to a narrower 18mm opening. Crafted from BPA-free silicone, these inserts are durable, clear, and gentle against the skin during pumping sessions. They slide inside your shield, creating a snug, comfortable tunnel that can feel more natural as you express milk.\u003c\/p\u003e\n\u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBroad compatibility with popular pumps and shields, including Medela, Spectra, Elvie, S18\/S21\/S23, Momcozy S9 Pro\/S12 Pro, TSRETE, Bellababy, NCVI and Freemie 25mm cups.\u003c\/li\u003e\n  \u003cli\u003eMay improve tunnel fit and comfort for small-nippled users when pairing with larger shields.\u003c\/li\u003e\n  \u003cli\u003eBPA-free silicone offers durability and a clear, skin-friendly surface for repeated use.\u003c\/li\u003e\n  \u003cli\u003eDesigned to work with most handsfree bra cups when placed inside 24\/25mm shields. A gentle squeeze helps the insert seat fully.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow it works\u003c\/h3\u003e\n\u003cp\u003eThe inserts reduce the nipple tunnel from 24–25mm to a more compact 18mm, enabling a more focused fit. To check compatibility, measure nipple diameter after a pumping session—16–17mm is a useful reference, or estimate the base circumference around 43.96–47.10mm before pumping.\u003c\/p\u003e\n\u003ch3\u003eUsage and care\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eInsert inside the shield with a light squeeze to ensure an even seating.\u003c\/li\u003e\n  \u003cli\u003eRinse with mild soap after pumping and air-dry completely to preserve silicone clarity.\u003c\/li\u003e\n  \u003cli\u003ePair with your preferred handsfree bra for a streamlined pumping setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat’s included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2 Durceler 18mm silicone flange inserts per pack.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNotes on compatibility\u003c\/h3\u003e\n\u003cp\u003eThese inserts are compatible with a broad range of 24–25mm shields and can adapt to multiple pump brands. While not a guarantee for every model, they are designed to offer a flexible, user-driven fit for many setups.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What sizes does the Dureler 18mm insert support?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It reduces 24–25mm shields to 18mm; for best fit, measure nipple diameter at 16–17mm after pumping (circumference about 43.96–47.10mm).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the Dureler 18mm insert compatible with Freemie and hands-free systems?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it works with many brands including Medela, Spectra, Elvie, TSRETE, and Freemie cups when used inside 24–25mm shields.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Durceler","offers":[{"title":"Default Title","offer_id":47380521353428,"sku":"B09MKB739K","price":69.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/6955\/8484\/files\/durceler-18mm-insert-closeup-silicone-texture.jpg?v=1766263388","url":"https:\/\/www.mythriftymom.ca\/products\/durceler-18mm-silicone-flange-inserts-convert-24-25mm-shields-to-18mm-medela-spectra-elvie-freemie","provider":"MyThriftyMom | Trusted Baby \u0026 Maternity Essentials for Canadian Families","version":"1.0","type":"link"}