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 18mm Flange and Maymom Duckbill Valve Compatible with Spectra S1 S2 9 Plus Replacement Pump Parts Spectra Flange Duckbill Valve

Product ID: 524156124

Details

Brand
Maymom
Included Components
Bottle Breast
Material
Plastic
Model Name
spectra
Special Feature
Closed System

🔧18mm precision flange size

♻️Reusable, dishwasher & steam safe

🛡️Durable, BPA/DEHP free & FDA compliant

¥6470

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Upgrade your pump game with Maymom: precision, safety, and comfort in every drop!

EFFORTLESS MAINTENANCE - Dishwasher top rack, boiling water, and microwave steam bag safe for hygienic, hassle-free cleaning.
SAFE CERTIFIED MATERIALS - Crafted from BPA/DEHP-free, FDA-compliant silicone and plastic, independently lab-tested for your baby’s safety.
DURABILITY MEETS CONVENIENCE - Maymom duckbill valves designed for easy plug-in/removal with long-lasting performance that keeps your pump running smoothly.
PERFECT FIT MAXIMUM COMFORT - 18mm flange engineered for seamless compatibility with Spectra S1, S2 & 9 Plus pumps, ensuring optimal suction and comfort.
UNIVERSAL COMPATIBILITY VERSATILITY - Works flawlessly with Spectra wide-neck bottles, Avent, and Maymom wide-mouth bottles—upgrade your pumping experience without compromise.

Maymom’s 18mm flange and duckbill valve set offers a high-quality, compatible replacement for Spectra S1, S2, and 9 Plus breast pumps. Made from BPA/DEHP-free, FDA-compliant materials, these durable parts ensure optimal suction and comfort. Designed for easy cleaning and universal bottle compatibility, they deliver reliable performance that professional moms trust to enhance their pumping routine.

Specifications

ASIN	B0BLCYPBG7
ASIN	B0BLCYPBG7
Additional Features	Closed System
Best Sellers Rank	#257 in Baby ( See Top 100 in Baby ) #127 in Baby Bottle-Feeding Supplies
Brand Name	Maymom
Color	Standard
Customer Reviews	4.6 4.6 out of 5 stars (6,216)
Date First Available	November 3, 2022
Included Components	Bottle, Breast Flange, Valve
Item Weight	0.05 kg
Item model number	S012W-F18Dx2
Manufacturer	Maymom
Manufacturer	Maymom
Manufacturer Part Number	S012W-F18Dx2
Manufacturer recommended age	0 months and up
Material Type	Plastic, Silicone
Model Name	spectra
Model Number	S012W-F18Dx2
Product Dimensions	6.14 x 4.09 x 3.43 inches; 1.76 ounces
Size	18 mm Flanges
Unit Count	2 Count

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How is product pricing calculated?+

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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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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Fantastic and great service. Shipping was faster than expected.

1 week ago

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¥6470

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

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Great experience from order to delivery. Highly recommended!

1 week ago

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