will this work with bellababy?

no. for bellabay, please buy from the following https://www.amazon.com/Maymom-Compatible-Bellababy-Double-Electric/dp/B09W2KRSC5/ref=sr_1_2?crid=23GCK9QCNBTGZ&keywords=maymom%2Bbellababy&qid=1676120494&sprefix=maymom%2Bbella%2Caps%2C298&sr=8-2&th=1

Did anyone have trouble and feel like these ran big?

Yes I definitely felt these ran big as compared to standard spectra. It doesn’t make sense but 19mm was too big when it was the right size in spectra

I used mine before realizing it’s the wrong flange size, should I still return them?

I did the same thing. I just brought flange inserts that were my nipple size and just pushed it in for the correct sizing. But you can if you want.

Does this flange work with the Kiinde system?

Yes if you have the Kiinde adapters

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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

Maymom 21mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Replacment Pump Parts Not Original Spectra Flange Duckbill Valve

Product ID: 193836008

Details

Brand
Maymom
Color
Standard
Included Components
Breast Flange
Material
Plastic
Special Feature
Closed System

📏21mm precision flange size

🔄Compatible with Spectra S1, S2, S1Plus

🛡️BPA/DEHP free, FDA compliant

135.43 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🍼 Upgrade your pump game with Maymom’s precision parts — because your baby deserves the best!

SAFE CERTIFIED - BPA/DEHP free and FDA compliant materials ensure safety for you and your baby, backed by independent lab testing.
EFFORTLESS MAINTENANCE - Durable duckbill valves designed for easy plug-in and removal, saving you time and hassle.
CLOSED SYSTEM ASSURANCE - Maintains hygienic pumping with a closed system design, protecting milk quality and your peace of mind.
PERFECT FIT EVERY TIME - 21mm flange engineered for seamless compatibility with Spectra S1, S2, and S1Plus pumps.
VERSATILE BOTTLE COMPATIBILITY - Works flawlessly with Spectra wide-neck, Avant, and Maymom wide-mouth bottles for ultimate convenience.

Maymom’s 21mm flange and duckbill valve set offers a high-quality, BPA-free replacement compatible with Spectra S1, S2, and S1Plus breast pumps. Designed for durability and ease of use, these parts maintain optimal suction and hygiene with a closed system, fitting multiple wide-neck bottle brands. Trusted by thousands with a 4.6-star rating, this FDA-compliant set ensures safe, efficient pumping for modern moms.

Specifications

ASIN	B0863NBHRX
Additional Features	Closed System
Best Sellers Rank	#231 in Baby ( See Top 100 in Baby ) #17 in Breastfeeding Supplies
Brand	Maymom
Brand Name	Maymom
Color	Standard
Customer Reviews	4.6 out of 5 stars 6,146 Reviews
Included Components	Breast Flange, Valve
Item Weight	0.08 kg
Manufacturer	Maymom
Manufacturer Part Number	ca_S012W-FxxDx2
Material	Plastic, Silicone
Material Type	Plastic, Silicone
Model Number	S012W-FxxDx2
Product Style	Flange 21mm + Valves
Size	21 mm Flanges
Special Feature	Closed System
Unit Count	1 Count

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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Received my product in pristine condition. Great service overall.

1 month ago

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Great price for an authentic product. Fast international shipping too!

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135.43 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

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