---
product_id: 235310595
title: "2X 21 mm Maymom Wide Neck Pump Parts for Spectra S1/S2 Pumps; Incl Wide Mouth Flanges; Not Original Spectra Flange; Replaces Spectra Shield (21 mm Small Spectra Flange)"
brand: "maymom"
price: "$51.60"
currency: USD
in_stock: true
reviews_count: 11
category: "Maymom"
url: https://www.desertcart.us/products/235310595-2x-21-mm-maymom-wide-neck-pump-parts-for-spectra
store_origin: US
region: United States of America
---

# 2x 21mm wide mouth flanges Dishwasher & steam sterilizer safe BPA-free, FDA-compliant plastics 2X 21 mm Maymom Wide Neck Pump Parts for Spectra S1/S2 Pumps; Incl Wide Mouth Flanges; Not Original Spectra Flange; Replaces Spectra Shield (21 mm Small Spectra Flange)

**Brand:** maymom
**Price:** $51.60
**Availability:** ✅ In Stock

## Summary

> 🍼 Pump smarter, not harder — upgrade your comfort game!

## Quick Answers

- **What is this?** 2X 21 mm Maymom Wide Neck Pump Parts for Spectra S1/S2 Pumps; Incl Wide Mouth Flanges; Not Original Spectra Flange; Replaces Spectra Shield (21 mm Small Spectra Flange) by maymom
- **How much does it cost?** $51.60 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/235310595-2x-21-mm-maymom-wide-neck-pump-parts-for-spectra)

## 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

- • **Safe & Hygienic:** Crafted from BPA-free materials, fully FDA-compliant, and dishwasher & steam sterilizer safe for busy moms.
- • **Custom Comfort Fit:** Wide 21mm flange designed for nipple diameters 18-20mm post-pumping, ensuring optimal comfort and efficiency.
- • **Trusted Alternative:** Premium Maymom quality offering a reliable, cost-effective replacement to original Spectra parts with improved features.
- • **Universal Compatibility:** Seamlessly fits Spectra S1/S2/9 pumps plus Ameda Mya and Motiff Luna models for versatile use.
- • **Enhanced Valve Flexibility:** Supports both Spectra and Maymom valve/membrane systems, plus various backflow protectors for personalized pumping.

## Overview

Maymom’s 2X 21mm wide neck pump flanges are precision-engineered replacements compatible with Spectra S1, S2, 9 pumps, and select other brands. Made from BPA-free, FDA-approved materials, these flanges prioritize comfort with a perfect fit for nipple sizes 18-20mm post-pumping. Dishwasher and steam sterilizer safe, they offer enhanced valve compatibility and a trusted alternative to original Spectra parts, empowering modern moms to pump efficiently and hygienically.

## Description

This product is made by Maymom to fit spectra’s S1/S2 pumps in addition to spectra 9 and spectra M pumps. It is known that using the correct size of flange (breastshield) in breast pumping is the most important factor in achieving comfort and efficiency. Every mother was created differently. One or two sizes can’t fit all. This is why Maymom develops more than 12 sizes of flanges spanning from 13 mm up to 36 mm to fit the average mothers and those mothers who need special sizes (e.g. 13, 15, 17, 36 mm). Measure your nipple diameter first (do it after a pumping session), and then use the size selector of this listing to choose the size that is 1-2 mm larger than your nipple diameter measured AFTER a pumping session. There are improvements of this flange over the original spectra design – 1. In addition to spectra’s duckbills, you can use Maymom’s valve/membrane system with this Maymom flange. You can also try other brands of duckbills/valve/membrane on this flange. The chances are that they will fit. 2. In addition to fitting Spectra’s backflow protector, you can use Maymom’s long stem, as well as short stem backflow protectors. You can also use Maymom’s tubing connector (sold separately) to connect this flange to many other popular breastpumps on the market. Content of the kit: Flange of wide mouth bottle connection x2 About Maymom Maymom is specialized in developing breast pump parts that can work with many name brand pumps on the market. The value of Maymom is to care for each mom!Disclaimer: Maymom is an independent company. Spectra is a trademark of Uzinmedicare, Korea. Maymom is not affiliated with Uzinmedicare.

Review: Great - Product arrived promptly and in good condition.
Review: Very good - As it says on the tin. Very good.

## Features

- Contains 2x 21mm widemouth flanges compatible with spectra s1 plus pump, s2 plus pump and 9 pump. Suitable for mother with a nipple diameter 18-20 mm (measured AFTER a pumping session). Suitable for spectra s2 accessory replacement and a great altertiave to spectra pump parts. Also suitable for Ameda Mya and Ameday Mya Pro pumps and Motiff Luna pumps.
- BPA free; Complies with US FDA regulation for plastics that contact foods
- Works with spectra wide mouth bottles, AVENT bottles, and Maymom wide mouth bottles. They are NOT compatible with OTHER wide mouth bottles.
- Made by Maymom, not original spectra company. Maymom is not affiliated with Uzinmedicare, the trademark owner of spectra.
- Dishwasher toprack safe; Steam safe sterilization;

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07ZGCGG2D |
| Best Sellers Rank | 20,973 in Baby Products ( See Top 100 in Baby Products ) 396 in Breast Pumps & Accessories |
| Brand | Maymom |
| Brand Name | Maymom |
| Country Of Origin | Taiwan |
| Customer Reviews | 4.6 out of 5 stars 295 Reviews |
| Dishwasher safe? | Yes |
| Included Components | Breast Flange |
| Included components | Breast Flange |
| Is the item dishwasher safe? | Yes |
| Item Weight | 0.08 Kilograms |
| Item weight | 0.08 Kilograms |
| Manufacturer | Maymom |
| Manufacturer Part Number | S012W-F21fD.bx2 |
| Material | Bpa Free |
| Material Type | Bpa Free |
| Model Number | S012W.B |
| Number of Items | 1 |
| Number of items | 1 |
| Product Style | Pumps |
| Size | 21 mm Flange |
| Unit Count | 1 count |

## Product Details

- **Brand:** Maymom
- **Material:** Bpa Free
- **Included components:** Breast Flange
- **Number of items:** 1
- **Item weight:** 0.08 Kilograms
- **Dishwasher safe?:** Yes
- **Style:** Pumps
- **Size:** 21 mm Flange
- **Manufacturer:** Maymom

## Images

![2X 21 mm Maymom Wide Neck Pump Parts for Spectra S1/S2 Pumps; Incl Wide Mouth Flanges; Not Original Spectra Flange; Replaces Spectra Shield (21 mm Small Spectra Flange) - Image 1](https://m.media-amazon.com/images/I/614U3FkgkFL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great
*by A***R on 16 October 2025*

Product arrived promptly and in good condition.

### ⭐⭐⭐⭐⭐ Very good
*by L***R on 12 May 2025*

As it says on the tin. Very good.

### ⭐⭐⭐⭐⭐ Compatable with spectra s1
*by E***E on 10 March 2025*

Brilliant quality. Bought these to go with my spectra s1 and found them very comfortable. Make sure you measure yourself before buying as it makes allll the difference to your output and comfort level.

## Frequently Bought Together

- 2X 21 mm Maymom Wide Neck Pump Parts for Spectra S1/S2 Pumps; Incl Wide Mouth Flanges; Not Original Spectra Flange; Replaces Spectra Shield (21 mm Small Spectra Flange)
- Maymom Wide-Mouth Milk Storage Collection Bottle with SureSeal Sealing Disk; Compatible with Spectra/Motif Luna/Ameda MYA/Bellababy Pumps. Can Replace Spectra S1 S2 Bottles, 6 pc (4.7Oz/140mL, 6pc)
- Momcozy Hands Free Pumping Bra, Adjustable Breast-Pumps Holding and Nursing Bra, Pumping & Nursing Bra in One

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-14*