I don't need the membranes (I have 10+ spares), can I just get the o-rings?

sorry. that is the only package we sell.

Where do the o rings go?

They go on to the pump handle diaphragm stem. If you ever lose suction it's most likely because one of these came off. Search for "medela hand pump o ring" images in your web browser to see a visual

What are the dimensions of the O-rings?

I don't know the exact measurements of the O-rings but I do know that if you are trying to replace a part for a Medela manual breast pump if it's perfectly.

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Maymom Breast Pump Parts Replacement Parts for Medela Manual Breast Pump Harmony, 4 O-Rings and 2 White Membranes, Aftermarket

Product ID: 724830158

Details

スタイル
手動
ブランド
Maymom
動作モード
手動
商品の個数
1
商品の重量
0.2 オンス
材質
Silicone

🌿BPA/DEHP-free silicone

♨️Heat resistant to 120℃

🛠️4 precision O-rings

11834CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered 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 Senegal.

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Description

🍼 Keep your pump flawless, because every drop counts!

TRUSTED ALTERNATIVE - High-quality non-original parts that save you time and money without compromise.
PEACE OF MIND STOCK UP - Never lose suction again—keep spares handy for uninterrupted pumping sessions.
PERFECT FIT REPLACEMENT - Engineered to restore your Medela Harmony pump’s suction power instantly.
PREMIUM SILICONE DURABILITY - Crafted from BPA-free, heat-resistant silicone for safe, long-lasting use.
BONUS THIN MEMBRANES INCLUDED - Comes with 2 extra white membranes to keep your pump performing flawlessly.

Maymom’s replacement parts kit for Medela Harmony manual breast pumps includes 4 silicone O-rings and 2 white membranes. Made from BPA/DEHP-free, heat-resistant silicone (up to 120℃) in Taiwan, these non-original parts offer a reliable, cost-effective solution to restore pump suction quickly and safely. Highly rated by users for perfect fit and durability, this kit is essential for busy moms who value efficiency and peace of mind.

Specifications

ASIN	B016Y51X5U
Amazon 売れ筋ランキング	ベビー＆マタニティ - 5,365位 ( ベビー＆マタニティの売れ筋ランキングを見る ) 搾乳器 - 51位
GTIN (Global Trade Identification Number)	00760488883082
UPC	760488883082
おすすめ度	4.7 5つ星のうち4.7 (1,651) var
カラー	White
スタイル名	手動
ブランド名	Maymom
メーカー名	Maymom
メーカー型番	M022-4O2M
ユニット数	1.00 個
商品の入り数	1
商品の重量	0.2 オンス
型番	M022-4O2M
操作モード	手動
特殊機能	Bpa Free
生産国	台湾
素材	Silicone
防カビ加工	BPA Free
食洗機対応	いいえ

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11834CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered 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 Senegal.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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