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Breast Pump Flanges

(4 products)

Finding the right breast pump flange is essential to ensuring your pumping sessions are comfortable, effective, and supportive of your breastfeeding journey. At Ameda, we understand that every mom’s body is unique — that’s why we offer a range of breast pump flanges designed to fit you, your pump, and your pumping style.

Whether you’re looking for universal flange inserts for added flexibility, angled flanges for a more natural pumping position, or a custom-fit breast pump flange to match your individual needs, Ameda has you covered. With comfort, compatibility, and performance in mind, our flanges help you make the most of every pumping session.

About Ameda’s Breast Pump Flange Products

Ameda’s breast pump flanges are designed to enhance your comfort while maximizing milk expression. We know that a poor-fitting flange can lead to discomfort and reduced milk flow, which is why we offer multiple size options and styles to ensure you have the perfect fit.

Two transparent Ameda breast pump flanges with a wide, cone-shaped design are shown; one is standing upright and the other is lying on its side, revealing a blue dot on the side.

Ameda Universal Soft Breast Pump Flange Inserts

The Universal Soft Breast Pump Flange Inserts are made from flexible silicone and are designed to fit inside Ameda’s standard 24mm flanges. Available in a wide range of sizes—from 11mm to 21mm—these inserts provide moms with a customized fit to ensure a more comfortable and efficient pumping session.

Ameda CustomFit flanges in sizes 2XL and 2XXL displayed on a white background.

Ameda CustomFit Breast Pump Flanges™ and Inserts

Every mom is unique — and so are her pumping needs. That’s why Ameda offers the CustomFit Breast Pump Flanges™ and Inserts, a versatile range of multiple size options to help most moms find their right flange size. Whether you need a smaller flange tunnel for a more secure vacuum seal or a larger funnel shape for better comfort, this customizable system ensures that your breast pump flange works for you. A proper fit not only supports better milk flow but also helps prevent soreness, elastic nipples, and potential discomfort around the areola.

Transparent, oval-shaped plastic or glass mask with a central circular opening.

Ameda GLO Flange

Designed exclusively for use with the Ameda GLO Wearable Breast Pump, the GLO Flange provides a soft, secure fit to support better comfort and milk flow. Made from flexible, BPA-free materials, these replacement flanges are available in multiple sizes to help users achieve an effective seal and avoid discomfort during pumping. A well-fitting flange is key to optimal suction and milk expression, and the GLO Flange gives pumping parents the option to personalize their setup for a more efficient and comfortable experience. Whether you’re replacing a worn part or adjusting your fit, the GLO Flange helps keep your pumping routine smooth and reliable.

Why Flange Fit Matters for Successful Pumping

The right flange size can make all the difference in your pumping success. If your flange is too small, it can pinch, restrict milk flow, and potentially cause nipple pain. If it’s too large, it may not create a vacuum seal, resulting in reduced suction and inefficient pumping.

With Ameda’s CustomFit Breast Pump Flanges™ and Universal Soft Breast Pump Flange Inserts, you can customize your fit to maximize comfort and pumping efficiency. A secure yet gentle flange tunnel helps position your nipple without drawing in excess breast tissue or ducts. Comfortable pumping sessions are more productive and less stressful, making it easier to meet your breastfeeding goals.

Breast pump flange incorrectly fitted on a breast with text "Poor Flange Fit = Less Milk" on the side.

How to Choose the Right Breast Pump Flange Size

  • Pink ruler icon with rounded corners and four measurement marks.

    Find your custom fit

    Begin by taking a measurement of your nipple size (diameter) and comparing it to Ameda’s flange sizing chart. Remember, your nipple should move freely within the flange tunnel without rubbing against the sides. If your breast tissue or areola is pulled in, or your nipples are stretched uncomfortably, the flange may be too large.

  • Icon of a person wearing a headset, depicted in pink.

    Seek Professional Guidance

    If you’re unsure about your fit, working with a lactation consultant can help you identify the size and style specifically designed for your needs. This is especially helpful for new moms who are still adjusting after pregnancy. For help finding a lactation consultant, visit our lactation support page.

Material Matters: Hard Plastic vs. Soft Silicone

Ameda offers a variety of flange options, each designed with the perfect balance of comfort and durability.

Ameda's hard plastic flanges provide durable, consistent suction and a secure vacuum seal. The soft silicone inserts fit inside Ameda’s 24mm flanges to provide a customized and comfortable fit.

Tips for Using Your Ameda Breast Pump Flanges

  • Icon of a hand with soap suds and a water droplet above.

    Clean Before First Use

    Before using any of Ameda’s breast pump flanges, always wash them with warm, soapy water and rinse them well in clean water. You can either hand-wash or place them on the top rack of a dishwasher (following product guidelines). Boiling parts for is also an option for sterilization before first use.

  • A pink circular crosshair symbol on a white background.

    Check the Fit Regularly

    Your breast flange size can change as your body adjusts post-pregnancy or if your milk supply fluctuates. Regularly reassess your flange fit to ensure comfort and efficient milk flow. Check that the flange fits directly around your nipple, with minimal areola drawn into the tunnel. If discomfort occurs, or suction weakens, a size adjustment may be needed.

  • Try Different Options

    If your current flange option isn’t providing the comfort or performance you need, consider exploring other styles or fits. Each option offers unique benefits, from flexible sizing to a more secure seal, helping you achieve better milk flow and comfort throughout your pumping journey.

FAQs About Our Flanges

What Happens If My Flange Doesn’t Fit Correctly?

If your flange doesn't fit correctly, it can cause discomfort and reduced milk flow. To check the fit, observe your nipple during pumping:

  • Good Fit: Your nipple moves freely, and you see space around it with minimal areola drawn into the flange tunnel.
  • Too Small: Your nipple rubs against the sides of the flange tunnel.
  • Too Large: More of your areola is drawn into the tunnel, and your areola may rub against the flange.

If your flange is too small or too large, try a different size.

Can I Use Ameda Flanges with Other Pumps?

Ameda flanges are designed specifically for use with Ameda breast pumps. Soft Flange Inserts are compatible only with Ameda standard 24mm flanges.

Are Soft Inserts Necessary?

Soft inserts are not required but are a great option for moms who experience nipple discomfort or friction during pumping. These inserts come in a wide range of sizes from 11mm to 21mm, offering flexibility for a more customized and comfortable fit. They help minimize discomfort while maintaining suction strength.

Why Choose Ameda for Breast Pump Flanges?

Ameda breast pump flanges are designed for comfort, durability, and a customizable fit. With a variety of sizes and options, we ensure that you can find the right fit for better milk flow and a more comfortable pumping experience.

What Are Some Breast Pump Care and Maintenance Tips? 

To ensure your Ameda breast pump flanges stay in good condition:

  • Clean before first use and after each use by washing in warm, soapy water or by placing them on the top rack of the dishwasher (following product guidelines).
  • Inspect for cracks or chips, as this can affect performance—if damaged, contact Ameda for replacements.
  • Store on a clean surface to avoid contamination.
An illustration of a breast pump with labeled parts, showing the funnel covering the breast areola and nipple.

Pumping Efficiency

Achieving pumping efficiency starts with selecting the right flange size. A properly fitted flange ensures the tunnel aligns with your nipple and creates a strong vacuum seal without causing discomfort.

When your flange fits correctly, you can express more milk in less time, helping reduce the risk of nipple pain or friction. For most moms, a well-fitting flange can shorten pumping sessions and make it easier to keep up with your baby’s needs.

A Learning Curve for Moms

Finding the right flange fit can feel overwhelming, especially for new moms navigating the early stages of breastfeeding. Breasts are still adjusting to milk production, and even experienced moms may need to reassess their flange size and comfort as their journey progresses.

Experimenting with different flange sizes and consulting lactation experts can help you find the best fit for a more comfortable, efficient pumping experience.

Printable Flange Sizing Guide

Explore More Breastfeeding Essentials

  • A clear, round silicone or glass nipple shield with a wide base and a small, protruding tip at the center. The bottom edge of the shield is slightly curved, creating a smooth transition from the base to the top. The structure is designed to provide support or aid in breastfeeding.

    Nipple Shields

    Ameda’s nipple shields are thoughtfully designed to provide a secure and comfortable fit.

    Nipple Shields

  • Ameda Mya Joy Plus breast pump with LED display turned on, flanges, and milk collection bottles, displayed on a white surface.

    Breast Pumps

    Pair your CustomFit Breast Pump Flanges™ with Ameda’s hospital-grade breast pumps, designed for comfort and efficiency at home or on the go.

    Breast Pumps

  • Breast Milk Storage

    Once you’ve pumped, store your milk safely with Ameda’s durable breast milk storage bags and bottles, designed to protect every drop.

    Breast Milk Storage

  • Ameda CleanEase microwaveable steam sanitizing bag with baby feeding items partially inside, such as bottle parts and a novelty item with a face.

    Breastfeeding Accessories

    Explore Ameda’s full line of accessories, from tubing and valves to spare parts, ensuring your pump stays in top condition.

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