---
product_id: 588029337
title: "Silicone Membrane Diaphragm Designed for Spectra S1 S2 9 Plus Breastpump Backflow Protector Also for Maymom Backflow Protector Long Medium Short Stem, Not Original Spectra Accessories Pump Part"
brand: "maymom"
price: "$U1291"
currency: UYU
in_stock: true
reviews_count: 8
category: "Maymom"
url: https://www.desertcart.uy/products/588029337-silicone-membrane-diaphragm-designed-for-spectra-s1-s2-9-plus
store_origin: UY
region: Uruguay
---

# FDA & EU compliant safe silicone Boil & steam sterilizable Closed system for hygienic pumping Silicone Membrane Diaphragm Designed for Spectra S1 S2 9 Plus Breastpump Backflow Protector Also for Maymom Backflow Protector Long Medium Short Stem, Not Original Spectra Accessories Pump Part

**Brand:** maymom
**Price:** $U1291
**Availability:** ✅ In Stock

## Summary

> 🍼 Elevate your pumping game with Maymom’s premium silicone shield!

## Quick Answers

- **What is this?** Silicone Membrane Diaphragm Designed for Spectra S1 S2 9 Plus Breastpump Backflow Protector Also for Maymom Backflow Protector Long Medium Short Stem, Not Original Spectra Accessories Pump Part by maymom
- **How much does it cost?** $U1291 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/588029337-silicone-membrane-diaphragm-designed-for-spectra-s1-s2-9-plus)

## 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

- • **Easy Sterilization:** Dishwasher safe and withstands boiling water or steam sterilization
- • **Hygienic Closed System:** Prevents milk backflow, ensuring a clean and safe pumping experience
- • **Universal Compatibility:** Fits Spectra S1, S2, 9 Plus & Maymom backflow protectors (long, medium, short stems)
- • **Optimize Pump Performance:** Regularly replace diaphragms to maintain peak suction power
- • **Premium Silicone Durability:** Stronger, food-grade silicone tested for safety and longevity

## Overview

The Maymom Silicone Membrane Diaphragm is a high-quality, FDA and EU-compliant replacement part designed for Spectra S1, S2, 9 Plus, and Maymom backflow protectors. Crafted from durable silicone, it ensures a hygienic closed system that prevents milk backflow, optimizing breastpump performance. Easy to sterilize via boiling, steaming, or dishwasher, this pack of 8 membranes guarantees long-lasting reliability for busy, health-conscious moms.

## Description

desertcart.com : Maymom Silicone Membrane Diaphragm Designed for Spectra S1 S2 9 Plus Breastpump Backflow Protector Also for Maymom Backflow Protector Long Medium Short Stem, Not Original Spectra Accessories Pump Part : Baby

Review: Just as good as spectra - Great quality works perfectly.
Review: Great Quality - Great quality, works perfectly witb Spectra 2. Color is nice

## Features

- After market silicone membrane Maymom backflow protector (both short and long stem) and compatible with Spectra S1/S2/ 9 Plus backflow protectors.
- Change the silicone diaphragms regularly to optimize the performance of your breastpump
- Stronger material for improved performance
- It does not fit the old version of spectra backflow protector; see photo for details.
- Comply with EU and USA FDA regulations for materials that contact food. Tested by independent labs for quality and safety. All items packaged in retail pack, sealed by manufacturer Maymom. Can be cleaned with boiling water or water steam.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CKY2NF1N |
| Additional Features | Closed System |
| Best Sellers Rank | #4,354 in Baby ( See Top 100 in Baby ) #63 in Electric Breast Pumps |
| Brand | Maymom |
| Brand Name | Maymom |
| Color | Blue |
| Customer Reviews | 4.8 out of 5 stars 581 Reviews |
| Is Dishwasher Safe | Yes |
| Is the item dishwasher safe? | Yes |
| Item Weight | 0.07 Kilograms |
| Manufacturer | Maymom |
| Material | Silicone |
| Material Type | Silicone |
| Size | 8 Count (Pack of 1) |
| Special Feature | Closed System |
| Unit Count | 8.00 Count |

## Product Details

- **Brand:** Maymom
- **Color:** Blue
- **Item Weight:** 0.07 Kilograms
- **Material:** Silicone
- **Special Feature:** Closed System

## Images

![Silicone Membrane Diaphragm Designed for Spectra S1 S2 9 Plus Breastpump Backflow Protector Also for Maymom Backflow Protector Long Medium Short Stem, Not Original Spectra Accessories Pump Part - Image 1](https://m.media-amazon.com/images/I/41UFSDBeASL.jpg)
![Silicone Membrane Diaphragm Designed for Spectra S1 S2 9 Plus Breastpump Backflow Protector Also for Maymom Backflow Protector Long Medium Short Stem, Not Original Spectra Accessories Pump Part - Image 2](https://m.media-amazon.com/images/I/41vB94--yeL.jpg)
![Silicone Membrane Diaphragm Designed for Spectra S1 S2 9 Plus Breastpump Backflow Protector Also for Maymom Backflow Protector Long Medium Short Stem, Not Original Spectra Accessories Pump Part - Image 3](https://m.media-amazon.com/images/I/51VRsl7PZhL.jpg)
![Silicone Membrane Diaphragm Designed for Spectra S1 S2 9 Plus Breastpump Backflow Protector Also for Maymom Backflow Protector Long Medium Short Stem, Not Original Spectra Accessories Pump Part - Image 4](https://m.media-amazon.com/images/I/61YZjvWg+0L.jpg)
![Silicone Membrane Diaphragm Designed for Spectra S1 S2 9 Plus Breastpump Backflow Protector Also for Maymom Backflow Protector Long Medium Short Stem, Not Original Spectra Accessories Pump Part - Image 5](https://m.media-amazon.com/images/I/61dCB7ZTrmL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Just as good as spectra
*by K***Y on January 17, 2026*

Great quality works perfectly.

### ⭐⭐⭐⭐⭐ Great Quality
*by L***A on July 30, 2025*

Great quality, works perfectly witb Spectra 2. Color is nice

### ⭐⭐⭐⭐⭐ Works well with Spectra S1
*by E***E on July 1, 2025*

When the membrane diaphragms that came with my Spectra S1 pump just weren’t adequately doing the job anymore, I found these! After reading through the reviews, I decided these would best fit my needs. I like that they feel a little thicker than the Spectra ones, so I’m hoping they may last longer. I also like that they have different colors! I went with the pink to match my duckbills from Legendairy. I’m very pleased with these and will order again in the future!

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**Shop now:** [https://www.desertcart.uy/products/588029337-silicone-membrane-diaphragm-designed-for-spectra-s1-s2-9-plus](https://www.desertcart.uy/products/588029337-silicone-membrane-diaphragm-designed-for-spectra-s1-s2-9-plus)

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-03-02*