Durceler 16mm Silicone Flange Inserts for Medela, Spectra, Elvie, Freemie — Reduce Nipple Tunnel to 16mm

Durceler 16mm Silicone Flange Inserts

Durceler 16mm silicone flange inserts are compact, flexible adapters designed to fit inside many 24 and 25 mm shields. Sold as a two‑piece pack, they help transform a larger shield’s tunnel into a comfortable 16 mm channel, giving you an alternative that can adapt to your pumping setup without changing your entire shield system.

Broad compatibility for everyday pumping

Designed to slip inside shields from popular brands, the inserts pair well with Medela, Spectra, Elvie, and others, including Freemie 25 mm cups. This compatibility can be especially useful if you own multiple shields or want to maximize your current gear without reinvesting in new parts.

• Two inserts per pack for flexible use
• Broad brand compatibility including Medela, Spectra, Elvie, Freemie, and more
• Removable, clear silicone that feels durable and comfortable

Comfort, fit, and real-world use

The 16 mm tunnel option is described as a solution for smaller nipples or when using larger shields. A proper tunnel fit matters for comfort and potentially smoother milk expression, especially for those who want to maintain existing shield sets.

• Silicone is BPA-free and built for durability
• Compatible with most handsfree bras when using original 24 or 25 mm shields
• To achieve a snug fit, a light squeeze may help seat the insert inside the shield during operation

Fit guidance and practical notes

Measurements can guide your choice before pumping: nipple diameter around 14–15 mm after a session, and base circumference roughly 37.68–40.82 mm. Use these references to assess whether the 16 mm option could suit your needs.

These inserts are designed to offer options without guaranteeing a specific outcome. Real-life results depend on your unique anatomy and pumping setup. If you’re experimenting with different shield sizes, start with short sessions to evaluate comfort and fit.

• Meets the need for a snug tunnel with 24–25 mm shields
• Supports continued use of your current pumping accessories