---
product_id: 571625046
title: "8 O-Rings 4 Breast Pump Membranes for Medela Harmony Manual Breast Pump, Maymom Pump Parts for Medela Hand Pump Harmony and Medela Membrane Replacement"
brand: "maymom"
price: "฿1311"
currency: THB
in_stock: true
reviews_count: 13
category: "Maymom"
url: https://www.desertcart.co.th/products/571625046-8-o-rings-4-breast-pump-membranes-for-medela-harmony
store_origin: TH
region: Thailand
---

# Perfect Medela Harmony fit BPA-free, FDA & global certified 8 precision O-rings & 4 membranes 8 O-Rings 4 Breast Pump Membranes for Medela Harmony Manual Breast Pump, Maymom Pump Parts for Medela Hand Pump Harmony and Medela Membrane Replacement

**Brand:** maymom
**Price:** ฿1311
**Availability:** ✅ In Stock

## Summary

> 🔧 Keep your pump flawless, because every drop counts!

## Quick Answers

- **What is this?** 8 O-Rings 4 Breast Pump Membranes for Medela Harmony Manual Breast Pump, Maymom Pump Parts for Medela Hand Pump Harmony and Medela Membrane Replacement by maymom
- **How much does it cost?** ฿1311 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/571625046-8-o-rings-4-breast-pump-membranes-for-medela-harmony)

## Best For

- maymom enthusiasts

## Why This Product

- Trusted maymom brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Certified Safety:** BPA-free materials with US FDA, Health Canada, and Australian Health approvals for peace of mind.
- • **Trusted by Thousands:** Highly rated with 4.7 stars from over 1,600 satisfied parents who swear by its reliability.
- • **Seamless Compatibility:** Specifically engineered for Medela Harmony manual pumps, ensuring flawless fit and function.
- • **Cost-Effective Solution:** Avoid costly pump replacements by refreshing your existing device with genuine-quality parts.
- • **Complete Replacement Kit:** Includes 8 durable O-rings and 4 membranes to keep your pump performing like new.

## Overview

Maymom’s 8 O-Rings and 4 Breast Pump Membranes are premium replacement parts designed exclusively for the Medela Harmony manual breast pump. Made from BPA-free materials and rigorously tested to meet FDA, Health Canada, and Australian health standards, this kit ensures safe, hygienic, and efficient pumping. With a perfect fit and durable construction, it’s the smart, cost-saving choice for busy parents who demand reliability and quality.

## Description

Maymom 8 O-Rings 4 Breast Pump Membranes for Medela Harmony Manual Breast Pump, Maymom Pump Parts for Medela Hand Pump Harmony and Medela Membrane Replacement Made by Maymom

Review: Great replacement parts - Seems to work well! The o ring fits perfectly on the pump stem! Thank you for a great product.
Review: Perfect match - These fit my hand pump PERFECTLY 👌 Lost one of the little gaskets and couldn't find the name brand replacement parts for it. Bought these and they worked like a charm. Saved me having to buy a whole new hand pump!

## Features

- Maymom pump parts compatible with Medela Harmony manual breast pump. BPA free.
- Contents: 8 o-rings and 4 membranes.
- US FDA registered medical device (No. D192499), Health Canada License (No.26003), Australian Health and Aged Care (ID 463470). Inspected by US FDA. Comply with FDA/EU regulations for plastic materials that contact food.
- Made by Maymom.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B0CKYGD784 |
| Best Sellers Rank | #2,991 in Baby ( See Top 100 in Baby ) #11 in Manual Breast Pumps |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,610) |
| Date First Available  | October 21, 2015 |
| Item model number  | M022-4O2Mx2 |
| Manufacturer  | Maymom |
| Product Dimensions  | 2.95 x 1.97 x 0.16 inches; 0.35 ounces |

## Product Details

- **Brand:** Maymom
- **Is Dishwasher Safe:** Yes
- **Manufacturer:** Maymom
- **Material:** Silicone
- **Number of Items:** 1

## Images

![8 O-Rings 4 Breast Pump Membranes for Medela Harmony Manual Breast Pump, Maymom Pump Parts for Medela Hand Pump Harmony and Medela Membrane Replacement - Image 1](https://m.media-amazon.com/images/I/41O3iUnvaeL.jpg)

## Available Options

This product comes in different **Flavor** options.

## Questions & Answers

**Q: I don't need the membranes (I have 10+ spares), can I just get the o-rings?**
A: sorry.  that is the only package we sell.

**Q: Is this made by Medela?  Does packaging say Medela?**
A: No, it doesn't say Medela.

**Q: Where do the o rings go?**
A: 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

**Q: What are the dimensions of the O-rings?**
A: 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great replacement parts
*by R***E on September 26, 2025*

Seems to work well! The o ring fits perfectly on the pump stem! Thank you for a great product.

### ⭐⭐⭐⭐⭐ Perfect match
*by D***N on November 12, 2025*

These fit my hand pump PERFECTLY 👌 Lost one of the little gaskets and couldn't find the name brand replacement parts for it. Bought these and they worked like a charm. Saved me having to buy a whole new hand pump!

### ⭐⭐⭐⭐⭐ Perfect fit for medela hand pump
*by L***. on January 22, 2026*

O ring fits perfectly on Medela hand pump!

## Frequently Bought Together

- Maymom 8 O-Rings 4 Breast Pump Membranes for Medela Harmony Manual Breast Pump, Maymom Pump Parts for Medela Hand Pump Harmony and Medela Membrane Replacement
- Medela Manual breast pump with Flex Shields Harmony Single Hand for More Comfort and Expressing More Milk
- Medela Spare Valves and Membranes, 2 Sets, Authentic Medela Replacement Parts Designed for All Medela Breast Pumps Except Sonata and Freestyle, Made Without BPA

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**Shop now:** [https://www.desertcart.co.th/products/571625046-8-o-rings-4-breast-pump-membranes-for-medela-harmony](https://www.desertcart.co.th/products/571625046-8-o-rings-4-breast-pump-membranes-for-medela-harmony)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-04*