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.

Maymom O Ring And Membrane For Medela Harmony

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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€ 25.36

Duties & taxes included

In stock

Sold byAmazon NetherlandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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Description

🔄 Keep your pump performing flawlessly—because every drop counts!

SAFE SOUND - Crafted from BPA-free and DEHP-free silicone for worry-free feeding sessions.
TRUSTED QUALITY - Maymom’s reliable accessories keep your pump running smoothly without compromise.
SLIM LIGHTWEIGHT - Compact 7.5 x 5 x 0.4 cm design weighing just 5.67g for easy storage and handling.
COMPLETE REPLACEMENT KIT - Includes 4 O-rings and 2 membranes—everything you need in one pack.
PUMP LIKE NEW EVERY TIME - Restore your Medela Harmony’s peak efficiency with fresh O-rings and membranes.

The Maymom O-Ring and Membrane Replacement Kit for Medela Harmony includes 4 silicone O-rings and 2 membranes made from BPA-free and DEHP-free materials. Designed to maintain optimal pump suction and hygiene, this compact and lightweight kit ensures your breast pump operates at peak performance for safe and efficient feeding.

Reviews

User

Perfectos

Era lo que estaba buscando ya que se me desgasto la goma de mi sacaleches manual (Medela) y ha funcionado perfectamente como si fuera nuevo asi que muy contenta con el resultado.Llego super rapido y en muy buenas condiciones.

5.05.2026

User

Adecuados

Me costó trabajar conseguirlos pero vienen varios por si se pierde el empaque del extractor manual ❤️

2.01.2024

User

Wieder wie neu

Super gut. Meine Pumpe funktioniert wieder. Die Saugkraft ließ extrem nach und dank den neuem O-Ring funktioniert alles wieder und ich muss mir keine neue kaufen.

30.04.2025

User

Helpful

Helpful.

18.04.2025

User

Duur maar nodig

Zonder o-ring trekt de kolf niet vacuüm

15.08.2023

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€ 25.36

Duties & taxes included

In stock

Sold byAmazon NetherlandsDelivered 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 Netherlands.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Abdullah B.

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

3 weeks ago

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Asin	B016Y51X5U
Is Discontinued By Manufacturer	No
Item Model Number	M022-4O2M
Manufacturer	Maymom
Product Dimensions	7.5 x 5 x 0.4 cm; 5.67 g

Maymom O-Ring and Membrane for Medela Harmony

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Details

Description

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Reviews

Common Questions