10 Best Eufy S1 Pro Breast Pump Flange Inserts in 2026
Updated on
April 2026
#1
Best Choice
17% Off
- Compatible with eufy Breast Pump S1 / S1 Pro only.
- Features HeatFlow technology for soothing warmth during pumping.
- Easy to clean; dishwasher safe and suitable for fridge/freezer storage.
- Durable silicone flange provides strong suction and seals well.
- Ergonomic design ensures comfort during use.
- Includes a 90-day limited warranty.
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- Compatible with eufy Breast Pump S1 / S1 Pro only.
- Features HeatFlow technology for soothing warmth during pumping.
- Easy to clean; dishwasher safe and suitable for fridge/freezer storage.
- Durable silicone flange provides strong suction and seals well.
- Ergonomic design ensures comfort during use.
- Includes a 90-day limited warranty.
#2
- Compatible with eufy Breast Pump models E10, E20, S1, and S1 Pro.
- Simple installation and user-friendly operation.
- Use the sizing guide to choose the appropriate insert size; nipple size may vary during breastfeeding.
- Silicone flange inserts designed for personalized comfort.
- Crafted from food-grade soft silicone for safety.
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- Compatible with eufy Breast Pump models E10, E20, S1, and S1 Pro.
- Simple installation and user-friendly operation.
- Use the sizing guide to choose the appropriate insert size; nipple size may vary during breastfeeding.
- Silicone flange inserts designed for personalized comfort.
- Crafted from food-grade soft silicone for safety.
#3
Best Value
20% Off
- Flange sizing kit includes 10 pieces in sizes 13/15/17/19/21mm, designed for compatibility with most 24mm breast pumps.
- Enhances pumping efficiency by reducing time and maximizing milk production with comfortable silicone inserts that stimulate milk flow.
- Made from food-grade silicone, these BPA-free inserts are easy to clean, dishwasher safe, and should be replaced every 2 months for optimal use.
- Includes a free nipple measurement ruler to help find the correct size for comfort and effectiveness during pumping.
- Nipple sizes may change, so it's recommended to start with a 10-pack that includes various sizes for the best fit.
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- Flange sizing kit includes 10 pieces in sizes 13/15/17/19/21mm, designed for compatibility with most 24mm breast pumps.
- Enhances pumping efficiency by reducing time and maximizing milk production with comfortable silicone inserts that stimulate milk flow.
- Made from food-grade silicone, these BPA-free inserts are easy to clean, dishwasher safe, and should be replaced every 2 months for optimal use.
Read More
#4
- Compatibility: Compatible with eufy Breast Pump E10 / E20 / S1 / S1 Pro.
- Easy to Install and Use: Enjoy hassle-free, simple setup and operation.
- Sizing Guide: Refer to our sizing guide to select the right size for optimal comfort. Nipple size may change during different breastfeeding stages, requiring different sizes of inserts. We recommend replacing flange inserts every 1 to 2 months.
- Customized Comfort: Find the perfect fit for your unique needs and experience comfortable, smooth breast pumping with our silicone flange inserts.
- Safe Material: These flange inserts are made from food-grade soft silicone.
- Guaranteed Reliability: eufy breast pump accessories are covered by a 90-day limited manufacturer's warranty.
- Lifespan: Typically lasts 3 months. Replace if suction and performance decrease with use, or based on your usage.
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- Compatibility: Compatible with eufy Breast Pump E10 / E20 / S1 / S1 Pro.
- Easy to Install and Use: Enjoy hassle-free, simple setup and operation.
- Sizing Guide: Refer to our sizing guide to select the right size for optimal comfort. Nipple size may change during different breastfeeding stages, requiring different sizes of inserts. We recommend replacing flange inserts every 1 to 2 months.
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#5
- Available in 11 sizes (12mm-22mm) to accommodate varying breastfeeding stages and prevent friction.
- Compatible with most breast pumps, including Momcozy, Spectra, Medela, and others.
- Soft silicone inserts enhance comfort, stimulate milk flow, and aim to increase pumping efficiency.
- Constructed from transparent, food-grade, BPA-free silicone, ensuring safety and a snug fit during use.
- Easy to clean; recommended to replace inserts every 1-2 months to maintain optimal fit.
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- Available in 11 sizes (12mm-22mm) to accommodate varying breastfeeding stages and prevent friction.
- Compatible with most breast pumps, including Momcozy, Spectra, Medela, and others.
- Soft silicone inserts enhance comfort, stimulate milk flow, and aim to increase pumping efficiency.
- Constructed from transparent, food-grade, BPA-free silicone, ensuring safety and a snug fit during use.
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#6
- Flange inserts provide comfort and support during breastfeeding, adjustable to nipple size to enhance effectiveness and reduce discomfort.
- Includes a sizing kit with various flange sizes (13mm to 21mm) for personalized comfort during pumping.
- Compatible with multiple 24mm wearable breast pumps for easy integration and use.
- Constructed from BPA-free food-grade silicone, ensuring safety for both mother and baby, while providing a gentle fit that prevents irritation.
- Designed for easy cleaning and durability, these silicone inserts can be sanitized with boiling water for hygienic use.
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- Flange inserts provide comfort and support during breastfeeding, adjustable to nipple size to enhance effectiveness and reduce discomfort.
- Includes a sizing kit with various flange sizes (13mm to 21mm) for personalized comfort during pumping.
- Compatible with multiple 24mm wearable breast pumps for easy integration and use.
- Constructed from BPA-free food-grade silicone, ensuring safety for both mother and baby, while providing a gentle fit that prevents irritation.
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#7
- Available in 11 sizes (12mm-22mm) for customizable comfort during breastfeeding.
- Compatible with various breast pumps, including Momcozy, Spectra, and Medela.
- Designed to enhance comfort and milk output, reducing pumping time.
- Made from transparent, food-grade silicone that is BPA-free and soft for a snug fit.
- Easy to clean with warm soapy water; recommended to replace inserts every 1-2 months.
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- Available in 11 sizes (12mm-22mm) for customizable comfort during breastfeeding.
- Compatible with various breast pumps, including Momcozy, Spectra, and Medela.
- Designed to enhance comfort and milk output, reducing pumping time.
- Made from transparent, food-grade silicone that is BPA-free and soft for a snug fit.
- Easy to clean with warm soapy water; recommended to replace inserts every 1-2 months.
#8
- Compatible with eufy Breast Pump: TOVVILD duckbill valve diaphragm replacement are perfect fit for E20, E10, S1, and S1 Pro models. Designed for seamless integration and optimal performance. Made by TOVVILD, not original eufy parts
- NO Backflow, NO Leaks: The diaphragms maintain strong, consistent suction just like the originals. The duckbill valve prevents backflow, keeps suction strong, and ensures milk flows where it should
- BPA-Free & Safe Materials: Made from 100% food-grade, BPA-free silicone, the breast pump replacement parts offering a safe and worry-free pumping experience for moms and babies
- Easy to Clean: Simply wash in warm, soapy water and rinse well after each use. For deeper cleaning, boil or steam for 5–10 minutes (up to 100℃/212℉). Avoid abrasive brushes—just use your fingertips to preserve part integrity
- Come with Store Case: A value pack of duckbill valve diaphragms to ensure you’re always prepared, saving you time and money while making maintenance hassle-free
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- Compatible with eufy Breast Pump: TOVVILD duckbill valve diaphragm replacement are perfect fit for E20, E10, S1, and S1 Pro models. Designed for seamless integration and optimal performance. Made by TOVVILD, not original eufy parts
- NO Backflow, NO Leaks: The diaphragms maintain strong, consistent suction just like the originals. The duckbill valve prevents backflow, keeps suction strong, and ensures milk flows where it should
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#9
- 【Wide Compatibility】：These flange inserts are designed to seamlessly work with a wide range of the breast pump with 24mm flange/shield models, Compatible with Momcozy Air 1/M9/M6/M5/V1 Pro/V2 Pro/S12Pro/S9Pro, for eufy S1 pro/S1/E20/E10; for Medela/ Spectra/Elvie/Lansinoh/Paruu/ and other.
- 【Multi-Size Options, Customized Comfort】：Our flange inserts have a wide range of size, 13/14/15/16/17/18/19/20/21/22mm-10 size options for selection, allowing you to customize your fit size,Personalize your pump for maximum comfort. Comfortable and suitable nipple flange insert can not only improve the efficiency of pumping, but reduce friction against the nipples or feels squeezed in the flange channel. Find the fit for your unique needs and enjoy a cozy pumping experience.
- 【Enhanced Pump Efficiency】: Flange insert kits have upgraded with the aim of improving milk suction efficiency, and the smooth, seamless design prevents milk residue buildu, ensuring a better seal and more effective milk expression.
- 【Super Soft & Comfort Pump】：Made from food-grade liquid silicone and free from BPA, Super soft and flexible, ensuring complete safety and comfort for pumping. The comfortable and soft silicone material is designed to stimulate milk flow and increase comfort during use. With the added benefits of reduced pain and increased milk output, our breast pump flange inserts are a must-have for any breastfeeding mother needing to pump milk.
- 【Effortless to Clean 】: These flange inserts are easy to clean and dishwasher safe. Before use, the breast pump flange inserts can be sterilized with steam, boiling water, or microwave steam bags. After each use, the replacement breast pump parts can be washed with mild soapy water, then rinsed with clean water. To maintain optimal function, we recommend replacing the pump accessories every 2 months.
Read More
- 【Wide Compatibility】：These flange inserts are designed to seamlessly work with a wide range of the breast pump with 24mm flange/shield models, Compatible with Momcozy Air 1/M9/M6/M5/V1 Pro/V2 Pro/S12Pro/S9Pro, for eufy S1 pro/S1/E20/E10; for Medela/ Spectra/Elvie/Lansinoh/Paruu/ and other.
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#10
- 【Wide Compatibility】：These flange inserts are designed to seamlessly work with a wide range of the breast pump with 24mm flange/shield models, Compatible with Momcozy Air 1/M9/M6/M5/V1 Pro/V2 Pro/S12Pro/S9Pro, for eufy S1 pro/S1/E20/E10; for Medela/ Spectra/Elvie/Lansinoh/Paruu/ and other.
- 【Multi-Size Options, Customized Comfort】：Our flange inserts have a wide range of size, 13/14/15/16/17/18/19/20/21/22mm-10 size options for selection, allowing you to customize your fit size,Personalize your pump for maximum comfort. Comfortable and suitable nipple flange insert can not only improve the efficiency of pumping, but reduce friction against the nipples or feels squeezed in the flange channel. Find the fit for your unique needs and enjoy a cozy pumping experience.
- 【Enhanced Pump Efficiency】: Flange insert kits have upgraded with the aim of improving milk suction efficiency, and the smooth, seamless design prevents milk residue buildu, ensuring a better seal and more effective milk expression.
- 【Super Soft & Comfort Pump】：Made from food-grade liquid silicone and free from BPA, Super soft and flexible, ensuring complete safety and comfort for pumping. The comfortable and soft silicone material is designed to stimulate milk flow and increase comfort during use. With the added benefits of reduced pain and increased milk output, our breast pump flange inserts are a must-have for any breastfeeding mother needing to pump milk.
- 【Effortless to Clean 】: These flange inserts are easy to clean and dishwasher safe. Before use, the breast pump flange inserts can be sterilized with steam, boiling water, or microwave steam bags. After each use, the replacement breast pump parts can be washed with mild soapy water, then rinsed with clean water. To maintain optimal function, we recommend replacing the pump accessories every 2 months.
Read More
- 【Wide Compatibility】：These flange inserts are designed to seamlessly work with a wide range of the breast pump with 24mm flange/shield models, Compatible with Momcozy Air 1/M9/M6/M5/V1 Pro/V2 Pro/S12Pro/S9Pro, for eufy S1 pro/S1/E20/E10; for Medela/ Spectra/Elvie/Lansinoh/Paruu/ and other.
Read More
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How We Estimate & Rank
We make shopping simple by hand-picking the top 10 Eufy S1 Pro Breast Pump Flange Inserts just for you. Our team focuses on what’s available right now, what’s popular with other shoppers, and, most importantly, what’s most relevant to your search. We cover leading brands such as eufy Security, Nuliie, BDICOVE, Nursi Luna, TOVVILD, and other trusted names in this category. By filtering out the noise, we ensure you only see high-quality options that actually meet your needs. It’s all the best finds, minus the endless scrolling!
1,610
PRODUCTS SCANNED & ANALYZED
Final Recommendations
We’ve selected three standout options to make your choice easier.
BEST OVERALL
Our overall winner is eufy Original 24mm Flange (2-Pack) by eufy Security, earning top marks for its balanced combination of quality, performance, and price.
BEST VALUE
The best value for most shoppers is Nuliie 3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Flange/Shield of Most Pumps by Nuliie, earning consistently positive feedback for its performance and accessible pricing.
BEST DEAL
The best deal available right now for Electric Breast Pumps is Nuliie 3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Flange/Shield of Most Pumps by Nuliie, now offered at 20% off.