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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Replacement Parts for Medela Harmony Manual Pump; 4 O-Rings and 2 Membranes

Product ID: 48780742

Details

Brand
Maymom
Colour
White
Dishwasher safe?
No
Item weight
0.2 Ounces
Material
Silicone
Material Type Free
BPA Free

🔄4 O-rings for secure seal

⚙️2 durable replacement membranes

🛡️BPA & DEHP free safe silicone

R431

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

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Description

🍼 Keep your pump flawless, keep your flow unstoppable!

TRUSTED BY THOUSANDS - Backed by 1,650+ glowing reviews and a 4.6-star rating—join the community of savvy parents who won’t settle for less.
HEALTH FIRST MATERIALS - Crafted from BPA-free and DEHP-free silicone, prioritizing your baby’s safety and your peace of mind.
COMPLETE MAINTENANCE KIT - Includes 4 O-rings and 2 membranes—everything you need to keep your pump running like new.
DURABILITY MEETS COMFORT - Premium silicone parts that resist wear and tear, extending the life of your pump effortlessly.
PERFECT FIT ZERO HASSLE - Specifically designed for Medela Harmony manual pumps to ensure seamless replacement and optimal performance.

This replacement kit for the Medela Harmony manual breast pump includes 4 silicone O-rings and 2 membranes made from BPA- and DEHP-free materials. Designed for a perfect fit and durability, these parts ensure hygienic, safe, and efficient pumping. Trusted by thousands of parents, this kit is essential for maintaining peak pump performance and longevity.

Specifications

ASIN	B016Y51X5U
ASIN	B016Y51X5U
Best Sellers Rank	4,715 in Baby Products ( See Top 100 in Baby Products ) 85 in Breast Pumps & Accessories
Brand Name	Maymom
Colour	White
Country Of Origin	Taiwan
Country of origin	Taiwan
Customer Reviews	4.6 4.6 out of 5 stars (1,681)
Customer reviews	4.6 4.6 out of 5 stars (1,681)
Global Trade Identification Number	00760488883082
Guaranteed software updates until	unknown
Is discontinued by manufacturer	No
Is the item dishwasher safe?	No
Item Weight	0.2 Ounces
Item model number	M022-4O2M
Manufacturer	Maymom
Manufacturer	Maymom
Manufacturer Part Number	M022-4O2M
Material Type	Silicone
Material Type Free	BPA Free
Model Name	Maymom O-Ring and Membrane for Medela Harmony
Model Number	M022-4O2M
Number of Items	1
Operation Mode	Manual
Product Dimensions	7.5 x 5 x 0.4 cm; 5.67 g
Size	One Size
Special Features	Bpa Free
UPC	760488883082
Unit Count	1 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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Fantastic experience overall. Will recommend to friends and family.

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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R431

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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