Breast Pump Flange Inserts – Silicone Diaphragm & Duckbill Valve Kit

Upgrade your wearable breast pump with this essential accessory kit — designed to make pumping more efficient, hygienic, and hassle-free. Whether you're at home, at the office, or on the go, these high-quality silicone flange inserts, diaphragms, and duckbill valves help maintain a secure, leak-free pumping experience every time.

These are breast pump accessories intended for personal care use. This product is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease. Always consult your healthcare provider or lactation consultant for breastfeeding guidance.

Why You'll Love This Kit

• Universal Compatibility: Designed to fit most popular wearable breast pumps, giving you flexibility to use your preferred milk storage bottles with ease.
• BPA-Free Silicone: Made from soft, food-grade silicone — safe for you and your baby. Free from BPA and harsh chemicals for total peace of mind.
• Leak-Free Performance: The precision-fit duckbill valves and silicone diaphragms work together to create a reliable seal, preventing spills and maintaining suction efficiency.
• Versatile Use: Ideal for breastfeeding mothers who use different brands of breast pumps or bottle types — a truly versatile solution for modern moms.
• Compact & Travel-Friendly: Lightweight and easy to store in your pump bag, diaper bag, or purse. Pump confidently wherever life takes you.
• Time-Saving Design: Pump directly into your bottle of choice — no more messy transfers or risk of spills. Simplify your breastfeeding journey.

What's Included

• 5 × Flange Inserts
• 2 × Silicone Diaphragms
• 2 × Duckbill Valves

Specifications

Important Notes

• Please allow 1–2 cm variance due to manual measurement.
• Colors may vary slightly from screen to screen due to monitor differences.
• Clean and sterilize all parts thoroughly before first use and after each pumping session.

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Breastfeeding Resources

For evidence-based breastfeeding information and guidance, visit the CDC Breastfeeding Resources page.

Learn more: Breast pump

Frequently Asked Questions

Q: Are these flange inserts compatible with all wearable breast pumps?

A: These flange inserts are designed to be compatible with most popular wearable breast pump models. We recommend checking your pump's flange size before purchasing to ensure the best fit and a secure, leak-free seal during pumping sessions.

Q: Are the silicone parts BPA-free and safe for breastfeeding moms?

A: Yes — all silicone components in this kit are made from BPA-free, food-grade silicone that is safe for both mother and baby. There are no high-concern chemicals used in the manufacturing of these breast pump accessories.

Q: How do I clean and sterilize the flange inserts, duckbill valves, and silicone diaphragms?

A: Rinse all parts with warm water after each use, then sterilize by boiling in water for 3–5 minutes or using a steam sterilizer. Allow parts to air dry completely on a clean surface before reassembling or storing.

Q: How many pieces are included in this breast pump accessory kit?

A: Each kit includes 5 flange inserts, 2 silicone diaphragms, and 2 duckbill valves — giving you everything you need for consistent, efficient pumping across multiple sessions.