Looking for the best replacement flanges to enhance your pumping experience? We’ve curated a list of top options for comfort, efficiency, and compatibility with popular pumps like Spectra and eufy.
Finding the right replacement flanges for your breast pump can make a big difference in your pumping experience. Comfort and efficiency are key, and the right parts can help you achieve both. Whether you’re a busy mom or just looking for a better fit, we’ve got you covered.
We’ve tested and reviewed the best replacement flanges compatible with popular pumps like Spectra, eufy, and more. These parts are BPA-free, easy to clean, and designed for maximum comfort. You’ll find options in various sizes to match your needs perfectly.
Ready to upgrade your pumping routine? Let’s dive in and find the perfect fit for you!
List of Top 10 Replacement Flanges
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Maymom 21mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Replacment Pump Parts Not Original Spectra Flange Duckbill Valve |
This product is perfect for moms who use Spectra S1, S2, or S1Plus breast pumps and need replacement parts. It’s easy to use, compatible, and BPA-free, making it a safe and reliable choice. |
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Maymom 19mm Flange and Duckbill Valve Compatible with Spectra S1 S2 Breastpump Not Original S2 Accessories Not Original Spectra Replacement Duckbill Valve and Flange |
This product is perfect for breastfeeding moms who use Spectra S1, S2, or 9 Plus pumps. It’s great for those needing smaller 19mm flanges or replacement duckbill valves that work just as well as the originals. |
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Spectra Replacement Pump Parts for S1/S2/9 Plus/Synergy Gold, Not Original Accessories, Breast Pump Parts Include Spectra Flanges 21mm/Duckbill Valve/Backflow Protector/Tubing/Nipple Measure Ruler |
This product is perfect for breastfeeding moms who own Spectra S1, S2, or 9 Plus pumps. It’s ideal for those needing affordable, safe replacement parts to keep their pumping routine efficient and hassle-free. |
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19mm Flange Maymom Pump Parts Compatible with Spectra S2 S1 9 Plus Replacement Kit Not Original Spectra S2 S1 Replacement Pump Parts |
This 19mm Flange Maymom Pump Parts Kit is perfect for mothers using Spectra S2, S1, or 9 Plus breast pumps who need replacement parts or a specific flange size. It’s ideal for those with a nipple diameter of 17–18mm looking for compatible, high-quality accessories. |
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Breast Pump Parts for Spectra S1/S2/9 Plus/Synergy Gold, Not Original Accessories, 19mm Set Spectra Replacements Pump Parts Include Flange/Duckbill Valve/Backflow Protector/Tubing/Bottles |
This product is perfect for moms who use Spectra S1, S2, or 9 Plus pumps and need affordable, reliable replacement parts. It’s safe, easy to clean, and works just like the originals. |
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PumpMom-us 19mm Soft Rim Flanges Compatible with Spectra S2 S1 9 Plus Breastpumps Accessories, Replacement Breast Shield and Duckbill Valves for Spectra Pump Parts and 19 Flange |
PumpMom-us 19mm Soft Rim Flanges are perfect for moms who use Spectra S2, S1, or 9 Plus breast pumps. They offer comfort, better suction, and safe materials for a smoother pumping experience. |
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Maymom Pump Parts Compatible with Spectra S2 S1 Replacement Kit for Spectra Pump Parts 24 mm Flange Duckbill Valve Tube Bottle Backflow Protector, Not Original S2 S1 Accessories |
This Maymom Pump Parts Kit is perfect for moms who use Spectra S2, S1, or 9 Plus pumps and need replacement parts. It’s great for travel and safe for storing breast milk. |
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Pump Parts Compatible with Spectra S1/S2/9Plus Breastpump, Full Set Replacement Parts for Spectra Include 19mm Flange,Duckbill Valve,Backflow Protector,Tube,Bottle, Not Original S2/S1 Accessories |
This product is perfect for breastfeeding moms who use Spectra S1, S2, or 9 Plus pumps. It’s great for those needing replacement parts or extra accessories for efficient pumping and safe storage. |
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eufy Original 24mm Flange (2-Pack), Replacement Accessories for Wearable Breast Pump E20/S1/S1 Pro, HeatFlow™ Technology, Food-Grade Silicone, Durable, Comfortable, Ergonomic Fit |
This 24mm flange 2-pack is perfect for moms using the eufy E20, S1, or S1 Pro breast pump. It offers a warm, comfortable pumping experience with easy cleaning and durable design. |
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BALIME 19MM Wide-Mouth Flange Spectra Replacement Pump Parts for S1 S2 – BPA Free Spectra Replacement Pump Parts – Perfect for Travel & Working Moms (2-Pack) |
This product is perfect for busy moms who need reliable and leak-free pumping. Whether you’re at home, work, or traveling, these BPA-free parts fit Spectra S1/S2 pumps perfectly and last a long time. |
Detailed Reviews
Discover the top 10 replacement flanges for your breast pump, carefully selected based on expert reviews and customer feedback. Each product is evaluated for comfort, durability, and value, ensuring you find the perfect fit. Whether you prioritize affordability or performance, this guide has you covered. Read on to find the best replacement flanges tailored to your needs and upgrade your pumping experience today.
1. Maymom 21mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Replacment Pump Parts Not Original Spectra Flange Duckbill Valve

Upgrade your Spectra pump with Maymom’s 21mm flanges and duckbill valves. These compatible parts work perfectly with Spectra S1, S2, and S1Plus models.
Easy to use, BPA-free, and dishwasher-safe. Tested for safety and durability.
| Pros | Cons |
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Perfect For:
This product is perfect for moms who use Spectra S1, S2, or S1Plus breast pumps and need replacement parts. It’s easy to use, compatible, and BPA-free, making it a safe and reliable choice.
Ready to Purchase?
2. Maymom 19mm Flange and Duckbill Valve Compatible with Spectra S1 S2 Breastpump Not Original S2 Accessories Not Original Spectra Replacement Duckbill Valve and Flange

Maymom’s 19mm flange and duckbill valve work with Spectra S1, S2, and 9 Plus breastpumps. These parts are not original Spectra accessories but are compatible and interchangeable. They offer the same suction power as OEM parts.
Maymom’s duckbill valves are easy to use and durable. The flanges fit wide-neck bottles and come in 12 sizes. Both are BPA/DEHP free and safe for cleaning.
| Pros | Cons |
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Perfect For:
This product is perfect for breastfeeding moms who use Spectra S1, S2, or 9 Plus pumps. It’s great for those needing smaller 19mm flanges or replacement duckbill valves that work just as well as the originals.
Ready to Purchase?
3. Spectra Replacement Pump Parts for S1/S2/9 Plus/Synergy Gold, Not Original Accessories, Breast Pump Parts Include Spectra Flanges 21mm/Duckbill Valve/Backflow Protector/Tubing/Nipple Measure Ruler

Spectra Replacement Pump Parts are a complete kit for your breast pump. They work with Spectra S1, S2, and 9 Plus models. These parts are not original, but they are made by Luxemum.
The kit has 2 flanges, 2 backflow protectors, 2 duckbill valves, 2 tubing sets, and a nipple measure ruler. They are safe for mom and baby, made from 100% food-grade silicone, and BPA-free. You can easily sterilize them with steam or boiling water.
Regular cleaning is essential for these parts. Use mild soapy water and rinse thoroughly. Avoid abrasive brushes and dishwashers. Always let flanges cool after sterilization to extend their lifespan.
| Pros | Cons |
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Perfect For:
This product is perfect for breastfeeding moms who own Spectra S1, S2, or 9 Plus pumps. It’s ideal for those needing affordable, safe replacement parts to keep their pumping routine efficient and hassle-free.
Ready to Purchase?
4. 19mm Flange Maymom Pump Parts Compatible with Spectra S2 S1 9 Plus Replacement Kit Not Original Spectra S2 S1 Replacement Pump Parts

The 19mm Flange Maymom Pump Parts are compatible with Spectra S2, S1, and 9 Plus breast pumps. These parts are not original Spectra accessories but work just as well. They are designed for mothers with a nipple diameter of 17–18mm.
This kit includes 2 flanges, 2 duckbill valves, 2 backflow protectors, 2 tubes, and 2 bottles. The one-piece travel caps ensure a secure seal for milk storage. All parts are made by Maymom, a trusted brand.
The materials are BPA-free and safe for food contact. They meet FDA and EU regulations. Cleaning is easy with steam, boiling water, or microwave-steam bags.
| Pros | Cons |
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Perfect For:
This 19mm Flange Maymom Pump Parts Kit is perfect for mothers using Spectra S2, S1, or 9 Plus breast pumps who need replacement parts or a specific flange size. It’s ideal for those with a nipple diameter of 17–18mm looking for compatible, high-quality accessories.
Ready to Purchase?
5. Breast Pump Parts for Spectra S1/S2/9 Plus/Synergy Gold, Not Original Accessories, 19mm Set Spectra Replacements Pump Parts Include Flange/Duckbill Valve/Backflow Protector/Tubing/Bottles

Breast Pump Parts for Spectra S1/S2/9 Plus/Synergy Gold are not original accessories. This 19mm set includes flanges, duckbill valves, backflow protectors, tubing, and bottles. Luxemum makes these parts, offering a complete kit for your pumping needs.
Made from 100% food-grade silicone, these parts are BPA-free and skin-friendly. You can sterilize them easily with steam or boiling water. Always let silicone parts cool down before use to keep them in good shape.
Regular replacement of pump parts is key for efficient pumping. Clean with mild soapy water and avoid harsh brushes. Luxemum’s customer service is ready to help if you get the wrong product, ensuring a great shopping experience.
| Pros | Cons |
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Perfect For:
This product is perfect for moms who use Spectra S1, S2, or 9 Plus pumps and need affordable, reliable replacement parts. It’s safe, easy to clean, and works just like the originals.
Ready to Purchase?
6. PumpMom-us 19mm Soft Rim Flanges Compatible with Spectra S2 S1 9 Plus Breastpumps Accessories, Replacement Breast Shield and Duckbill Valves for Spectra Pump Parts and 19 Flange

PumpMom-us 19mm Soft Rim Flanges are compatible with Spectra S2, S1, and 9 Plus breast pumps. They are expertly designed to improve breast suction efficiency and comfort.
These replacement parts include 19mm flanges, breast shields, and duckbill valves. Made from BPA-free, food-grade materials, they are safe and sealed by the manufacturer.
Upgrade your pumping experience with better fit and comfort. Easy to use and compatible with Spectra pumps. PumpMom offers quality and safety.
| Pros | Cons |
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Perfect For:
PumpMom-us 19mm Soft Rim Flanges are perfect for moms who use Spectra S2, S1, or 9 Plus breast pumps. They offer comfort, better suction, and safe materials for a smoother pumping experience.
Ready to Purchase?
7. Maymom Pump Parts Compatible with Spectra S2 S1 Replacement Kit for Spectra Pump Parts 24 mm Flange Duckbill Valve Tube Bottle Backflow Protector, Not Original S2 S1 Accessories

Maymom Pump Parts are compatible with Spectra S2, S1, and 9 Plus breast pumps. This replacement kit includes 24mm flanges, duckbill valves, backflow protectors, tubes, and bottles with one-piece travel caps.
All parts are BPA-free, FDA-registered, and safe for food contact. They are easy to clean and designed for travel, with a secure seal to prevent milk waste.
| Pros | Cons |
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Perfect For:
This Maymom Pump Parts Kit is perfect for moms who use Spectra S2, S1, or 9 Plus pumps and need replacement parts. It’s great for travel and safe for storing breast milk.
Ready to Purchase?
8. Pump Parts Compatible with Spectra S1/S2/9Plus Breastpump, Full Set Replacement Parts for Spectra Include 19mm Flange,Duckbill Valve,Backflow Protector,Tube,Bottle, Not Original S2/S1 Accessories

This full set of pump parts works with Spectra S1, S2, and 9 Plus breast pumps. It includes flanges, valves, tubes, and bottles, all made from safe, food-grade silicone. These parts are not original Spectra accessories but are perfectly compatible.
The upgraded flange design improves milk suction efficiency, and the large 180ml bottles are great for storing milk or snacks. All parts are easy to clean and come in eco-friendly packaging.
| Pros | Cons |
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Perfect For:
This product is perfect for breastfeeding moms who use Spectra S1, S2, or 9 Plus pumps. It’s great for those needing replacement parts or extra accessories for efficient pumping and safe storage.
Ready to Purchase?
9. eufy Original 24mm Flange (2-Pack), Replacement Accessories for Wearable Breast Pump E20/S1/S1 Pro, HeatFlow™ Technology, Food-Grade Silicone, Durable, Comfortable, Ergonomic Fit

The eufy Original 24mm Flange (2-Pack) is a must-have replacement for your eufy Breast Pump E20 / S1 / S1 Pro. It’s made with food-grade silicone for safety and comfort.
Enjoy soothing warmth during pumping with HeatFlow technology. The soft, durable design ensures a strong seal and pleasant experience.
Easy to clean, works with third-party inserts, and covered by a 90-day warranty. Replace every 3 months for best performance.
| Pros | Cons |
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Perfect For:
This 24mm flange 2-pack is perfect for moms using the eufy E20, S1, or S1 Pro breast pump. It offers a warm, comfortable pumping experience with easy cleaning and durable design.
Ready to Purchase?
10. BALIME 19MM Wide-Mouth Flange Spectra Replacement Pump Parts for S1 S2 – BPA Free Spectra Replacement Pump Parts – Perfect for Travel & Working Moms (2-Pack)

BALIME 19MM Wide-Mouth Flange Spectra Replacement Pump Parts are BPA-free and perfect for travel and working moms. They fit Spectra S1 and S2 pumps with no leaks, thanks to their precise 0.1mm engineering. Each pack includes two flanges for convenience.
These replacement parts work well anytime, anywhere. Whether at home, work, or night, they help moms stick to their pumping routine. The 3-layer silicone lasts 10x longer than standard options.
Available in sizes 13mm to 28mm, these flanges match hospital-grade durability. They withstand 500+ sterilizations and come with a maintenance guide for long-lasting use.
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Perfect For:
This product is perfect for busy moms who need reliable and leak-free pumping. Whether you’re at home, work, or traveling, these BPA-free parts fit Spectra S1/S2 pumps perfectly and last a long time.
Ready to Purchase?
Buying Guide
Finding the right replacement flanges can make pumping easier and more comfortable. The perfect fit boosts efficiency and comfort for busy moms.
Here’s what to consider when buying:
- Size: Choose the right size for your nipples. Flanges come in sizes like 19mm, 21mm, or 24mm. A good fit prevents pain and improves suction.
- Compatibility: Ensure the flanges work with your pump. Check if they’re compatible with brands like Spectra, eufy, or others.
- Material: Look for BPA-free, food-grade silicone. It’s safe, soft, and durable.
- Ease of Cleaning: Pick flanges that are dishwasher-safe or easy to sterilize. Quick cleaning saves time for busy moms.
- Durability: Choose parts that last. High-quality flanges withstand repeated use and sterilization.
- Comfort Features: Some flanges have soft rims or HeatFlow technology for extra comfort. These features make pumping pleasant.
- Value: Consider kits with multiple parts like valves, tubes, and bottles. They offer better value and convenience.
With these tips, you’ll find the perfect replacement flanges for a smoother pumping experience.