Silicone Breast Pump Flange Inserts | 6 Sizes | BPA-Free

Silicone Breast Pump Flange Inserts — Comfortable, Seamless & BPA-Free

Struggling with a flange that's just too large for a comfortable, efficient pump session? These soft silicone breast pump flange inserts narrow the nipple tunnel to the exact size you need, creating a snug, leak-free seal that boosts suction and milk output — all while keeping your sensitive skin protected.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Why Nursing Moms Love These Flange Inserts

• Perfect Fit for Small Nipples: Reduces the shield tunnel to your ideal size — choose from 13mm, 15mm, 17mm, 19mm, 21mm, or 24mm — so you can pump comfortably and effectively.
• Universal Compatibility: Seamlessly fits most major brand breast pumps, both electric and manual, giving you flexibility no matter which pump you use.
• Ultra-Soft, Skin-Friendly Silicone: Made from food-grade, BPA-free silicone that is gentle on delicate breast skin and provides an excellent airtight seal for optimal performance.
• Easy to Clean: Dishwasher safe and simple to hand-wash — hygienic maintenance has never been easier.
• 6 Size Options: 13mm / 15mm / 17mm / 19mm / 21mm / 24mm — always measure your nipple diameter before ordering to ensure you select the right size.

Product Specifications

Package Contents

• 1 × Silicone Breast Pump Flange Insert (in your chosen size)

Please Note: Allow 1–2 mm variance due to manual measurement. Colors may vary slightly from screen to screen.

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Further Reading

For guidance on breastfeeding and pumping best practices, visit the CDC Breastfeeding Resource Center.

Learn more: Breast pump

Frequently Asked Questions

Q: How do I choose the right size silicone breast pump flange insert?

A: Measure your nipple diameter (not including the areola) in millimeters before pumping. Choose the insert size that is closest to your nipple measurement. A proper fit should allow your nipple to move freely without the areola being pulled in. The 6 available sizes — 13mm, 15mm, 17mm, 19mm, 21mm, and 24mm — cover a wide range of nipple sizes to ensure a comfortable, efficient pumping experience.

Q: Are these silicone flange inserts compatible with my breast pump?

A: These flange inserts are designed for seamless compatibility with most major brand breast pumps, including both electric and manual models. They fit inside your existing flange/shield and reduce the nipple tunnel opening to your desired size. If you are unsure about compatibility, check your pump's flange inner diameter before purchasing.

Q: How do I clean and sterilize the silicone breast pump flange inserts?

A: These inserts are made from food-grade, BPA-free silicone and are dishwasher safe. You can also hand-wash them with warm, soapy water after each use. For deeper sterilization, they can be boiled or steam-sterilized, just like other silicone breastfeeding accessories. Always allow them to dry completely before reassembling.

Q: Will these flange inserts improve my milk output?

A: A correctly sized flange creates a better seal around the nipple, which can improve suction efficiency and comfort — both of which are key factors in effective milk expression. Many nursing moms with smaller nipples find that using a properly fitted insert significantly improves their pumping experience compared to using an oversized flange alone.