---
title: "eufy breast pump replacement parts — Niche Verdict: Worth a look (66/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/baby-products/eufy-breast-pump-replacement-parts"
last_updated: "2026-07-14T02:09:07.618Z"
locale: en
meta:
  description: "eufy breast pump replacement parts shows beatable incumbent ratings (3.9★), but a failed launch gate (market size, growth, or returns) keeps it on the watch list."
  "og:description": "eufy breast pump replacement parts shows beatable incumbent ratings (3.9★), but a failed launch gate (market size, growth, or returns) keeps it on the watch list."
  "og:title": "eufy breast pump replacement parts — Niche Verdict: Worth a look (66/100) | Amazon United States - Flapen"
---

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# **eufy breast pump replacement parts**

**Worth a look**

Shows beatable incumbent ratings (3.9★), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 71Growth 50Conversion 76Competition 47Returns 70Price range 87Avg price 95Brand share 26Review moat 94Quality gap 96

**Quality gap**

**Incredible****3.9★**

avg incumbent rating — lower means beatable quality

**Avg price**

**Incredible****$27.89**

avg listing price — sweet spot $15–$100

**Review moat**

**Great****113.4**

avg incumbent reviews — the moat a new listing must climb

**Price range**

**Great****$10.05–$58.56**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Conversion**

**Great****7.3%**

search→purchase rate — share of searches ending in a sale

**Market size**

**Good****$765K**

$765K/yr · 373K searches

**Returns**

**Good****2.2%**

return rate — above 6% kills the launch gate

**Growth**

**Okay****+19.9%**

90-day search growth — must beat 0% to launch

**Competition**

**Okay****57%**

top-5 click share — leaders hold, buyers still browse

**Brand share**

**Okay****89%**

top-5 brand share — brands hold most of the demand

## **Competition**

The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.

**Brands**

**10 **▲rising

**Sellers**

**12**

**Top-5 brand share**

**89%**

**Open market**

**5%**

- eufy Security37% - Wevedk18% - TOVVILD14% - Goktvai11% - seatenwell9% - IVARONAL6% - Open — no brand owns it (4 brands, 5%)

## **Product shelf**

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%4%$31K8%$61K12%$92K16%$122K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 20 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![eufy Security Original 24mm Flange (2-Pack) Replacement Accessories for Wearable Breast Pump E20/S1/S1 Pro HeatFlow Technology Food-Grade Silicone Durable Comfortable Ergonomic Fit](https://m.media-amazon.com/images/I/21Pbls6tjtL.jpg)**eufy Security Original 24mm Flange (2-Pack) Replacement Accessories for Wearable Breast Pump E20/S1/S1 Pro HeatFlow Technology Food-Grade Silicone Durable Comfortable Ergonomic Fit**eufy Security**$55.79**4.7★182 rev](https://www.amazon.com/dp/B0D72ZHX7K) [2![TOVVILD 12PCS Duckbill Valves Silicone Diaphragms Compatible with eufy E10/E20/S1/S1 Pro Replacement Parts Wearable Breast Pump Accessories](https://m.media-amazon.com/images/I/312AS4p6-OL.jpg)**TOVVILD 12PCS Duckbill Valves Silicone Diaphragms Compatible with eufy E10/E20/S1/S1 Pro Replacement Parts Wearable Breast Pump Accessories**TOVVILD**$19.44**4.1★123 rev](https://www.amazon.com/dp/B0DPPSY1JW) [3![2 Set Overall Pump Parts and 6pcs 17/19/21mm Flange Insert for eufy E20/S1/S1 Pro Pump Including Non-Heated 24mm Flange Collector Valves Diaphragms 17/19/21mm Inserts 2 Overall-Non-Heated](https://m.media-amazon.com/images/I/41M2LvFOYEL.jpg)**2 Set Overall Pump Parts and 6pcs 17/19/21mm Flange Insert for eufy E20/S1/S1 Pro Pump Including Non-Heated 24mm Flange Collector Valves Diaphragms 17/19/21mm Inserts 2 Overall-Non-Heated**Wevedk**$58.56**2.1★15 rev](https://www.amazon.com/dp/B0GJRVCPT8) [4![eufy Security Original Diaphragm (2-Pack) for Wearable Breast Pump E10/E20/S1/S1 Pro Food-Grade Silicone Suction Regulation Easy to Clean and Install](https://m.media-amazon.com/images/I/21950Jon5OL.jpg)**eufy Security Original Diaphragm (2-Pack) for Wearable Breast Pump E10/E20/S1/S1 Pro Food-Grade Silicone Suction Regulation Easy to Clean and Install**eufy Security**$18.93**4.7★275 rev](https://www.amazon.com/dp/B0D733J887) [5![8pcs Replacement Parts for eufy Breast Pump 4 Silicone Diaphragms & 4 Duckbill Valves Accessories Kit Compatible with eufy S1 Pro S1 E10 E20 Wearable Breast Pump](https://m.media-amazon.com/images/I/318MC2mVJTL.jpg)**8pcs Replacement Parts for eufy Breast Pump 4 Silicone Diaphragms & 4 Duckbill Valves Accessories Kit Compatible with eufy S1 Pro S1 E10 E20 Wearable Breast Pump**Goktvai**$14.08**4.6★36 rev](https://www.amazon.com/dp/B0GCD1PGTK)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![2 Sets Breast Pump Part Kits with 24mm Non-Heated Flange Compatible with eufy S1 Pro/S1/E20 Not for E20 Model Fit for eufy Breast Pump Replacement Parts Diaphragms Valve Collector Flange](https://m.media-amazon.com/images/I/41UdpDZ-4tL.jpg)**2 Sets Breast Pump Part Kits with 24mm Non-Heated Flange Compatible with eufy S1 Pro/S1/E20 Not for E20 Model Fit for eufy Breast Pump Replacement Parts Diaphragms Valve Collector Flange**Wevedk**$58.39**3 rev3mo ago](https://www.amazon.com/dp/B0GTZ743KX) [![Omni S1 Pro/S1 Accessory Kit for eufy S1 Omni S1 Pro Robot Vacuum Replacement Parts Include 1*Main Roller Brushes 2*Mopping Rollers 6*Side Brushes 4*HEPA Filters 6*Dust Bags 1*Cleaning Tool](https://m.media-amazon.com/images/I/51t-3mn9fxL.jpg)**Omni S1 Pro/S1 Accessory Kit for eufy S1 Omni S1 Pro Robot Vacuum Replacement Parts Include 1*Main Roller Brushes 2*Mopping Rollers 6*Side Brushes 4*HEPA Filters 6*Dust Bags 1*Cleaning Tool**Lacvik**$32.96**8 rev5mo ago](https://www.amazon.com/dp/B0GD7VGYZJ) [![2 Set Overall Pump Parts and 6pcs 17/19/21mm Flange Insert for eufy E20/S1/S1 Pro Pump Including Non-Heated 24mm Flange Collector Valves Diaphragms 17/19/21mm Inserts 2 Overall-Non-Heated](https://m.media-amazon.com/images/I/41M2LvFOYEL.jpg)**2 Set Overall Pump Parts and 6pcs 17/19/21mm Flange Insert for eufy E20/S1/S1 Pro Pump Including Non-Heated 24mm Flange Collector Valves Diaphragms 17/19/21mm Inserts 2 Overall-Non-Heated**Wevedk**$58.56**15 rev5mo ago](https://www.amazon.com/dp/B0GJRVCPT8) [![2pcs Non-Heated 24mm Flange Replacement Compatible with Eufy E20/S1/S1 Pro Wearable Breast Pump Food-Grade Silicone Durable Comfortable Replaced for eufy Pump Flange](https://m.media-amazon.com/images/I/31aoferra-L.jpg)**2pcs Non-Heated 24mm Flange Replacement Compatible with Eufy E20/S1/S1 Pro Wearable Breast Pump Food-Grade Silicone Durable Comfortable Replaced for eufy Pump Flange**Wevedk**$35.34**1 rev5mo ago](https://www.amazon.com/dp/B0GJS277NX) [![10pcs Breastpump Kits 6pcs Duckbill Valves and 4pcs Silicone Diaphragms Compatible with eufy S1 Pro/S1/E10/E20 Pump Replace for Lansinoh Discreet Duo/NCVI/NICEGREEN/Nuliie/Zooawa S32 Model Pump](https://m.media-amazon.com/images/I/419b+ULpNlL.jpg)**10pcs Breastpump Kits 6pcs Duckbill Valves and 4pcs Silicone Diaphragms Compatible with eufy S1 Pro/S1/E10/E20 Pump Replace for Lansinoh Discreet Duo/NCVI/NICEGREEN/Nuliie/Zooawa S32 Model Pump**IVARONAL**$15.85**279 rev5mo ago](https://www.amazon.com/dp/B0GHMMPYLM)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![2 Sets Breast Pump Part Kits with 24mm Non-Heated Flange Compatible with eufy S1 Pro/S1/E20 Not for E20 Model Fit for eufy Breast Pump Replacement Parts Diaphragms Valve Collector Flange](https://m.media-amazon.com/images/I/41UdpDZ-4tL.jpg)**2 Sets Breast Pump Part Kits with 24mm Non-Heated Flange Compatible with eufy S1 Pro/S1/E20 Not for E20 Model Fit for eufy Breast Pump Replacement Parts Diaphragms Valve Collector Flange**Wevedk**$58.39**1.8★**▲ 128%**](https://www.amazon.com/dp/B0GTZ743KX) [![Breast Pump Replacement Parts Kit Compatible with Eufy Electric Wearable Breast Pumps E10 / E20 / S1 / S1 Pro 10PCS Includes 4 Spout Caps 4 Duckbill Valves & 2 Silicone Diaphragms BPA Free](https://m.media-amazon.com/images/I/41fzKmK0nML.jpg)**Breast Pump Replacement Parts Kit Compatible with Eufy Electric Wearable Breast Pumps E10 / E20 / S1 / S1 Pro 10PCS Includes 4 Spout Caps 4 Duckbill Valves & 2 Silicone Diaphragms BPA Free**seatenwell**$10.05**3.9★**▲ 120%**](https://www.amazon.com/dp/B0GFCWB6RB) [![2pcs Non-Heated 24mm Flange Replacement Compatible with Eufy E20/S1/S1 Pro Wearable Breast Pump Food-Grade Silicone Durable Comfortable Replaced for eufy Pump Flange](https://m.media-amazon.com/images/I/31aoferra-L.jpg)**2pcs Non-Heated 24mm Flange Replacement Compatible with Eufy E20/S1/S1 Pro Wearable Breast Pump Food-Grade Silicone Durable Comfortable Replaced for eufy Pump Flange**Wevedk**$35.34**1.0★**▲ 108%**](https://www.amazon.com/dp/B0GJS277NX) [![Omni S1 Pro/S1 Accessory Kit for eufy S1 Omni S1 Pro Robot Vacuum Replacement Parts Include 1*Main Roller Brushes 2*Mopping Rollers 6*Side Brushes 4*HEPA Filters 6*Dust Bags 1*Cleaning Tool](https://m.media-amazon.com/images/I/51t-3mn9fxL.jpg)**Omni S1 Pro/S1 Accessory Kit for eufy S1 Omni S1 Pro Robot Vacuum Replacement Parts Include 1*Main Roller Brushes 2*Mopping Rollers 6*Side Brushes 4*HEPA Filters 6*Dust Bags 1*Cleaning Tool**Lacvik**$32.96**4.8★**▲ 92%**](https://www.amazon.com/dp/B0GD7VGYZJ) [![8pcs Replacement Parts for eufy Breast Pump 4 Silicone Diaphragms & 4 Duckbill Valves Accessories Kit Compatible with eufy S1 Pro S1 E10 E20 Wearable Breast Pump](https://m.media-amazon.com/images/I/318MC2mVJTL.jpg)**8pcs Replacement Parts for eufy Breast Pump 4 Silicone Diaphragms & 4 Duckbill Valves Accessories Kit Compatible with eufy S1 Pro S1 E10 E20 Wearable Breast Pump**Goktvai**$14.08**4.6★**▲ 87%**](https://www.amazon.com/dp/B0GCD1PGTK)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 75 weeks — +19.9% search growth over the last 90 days.

13K8KSpike '25Prime Day '25Black Friday '25Spike '26 seasonFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: Jan · busiest ÷ quietest = 2.0×

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Size-Overall**32%

*“Fit perfect”*

**Quality-Overall**12%

*“The quality seems solid overall”*

**Value For Money**8%

*“Cost effective”*

**Compatibility-Overall**7%

*“Very compatible”*

**Advertised Vs Actual Product**7%

*“Works exactly as promised”*

**Leak-Proof**6%

*“it wont leak”*

**Ease Of Cleaning**3%

*“It is really nice that this also include a cleaning brush, which again, makes it great to keep ready to go”*

**Durability**3%

*“durable”*

**Ease Of Use**2%

*“easy to use”*

**Breastfeeding Friendly**2%

*“The compatibility with models like Eufy Electric Wearable Breast Pump E10, Eufy Electric Wearable Breast Pump E20, Eufy Electric Wearable Breast Pump S1, and Eufy Electric Wearable Breast Pump S1 Pro is accurate—the parts fit properly and function without major issues”*

### **What buyers complain about **

**Size-Overall**15%

*“Theyre very tiny”*

**Leak-Proof**11%

*“they are not completely leak-proof”*

**Quality-Overall**9%

*“are not the same quality as the originals”*

**Compatibility-Overall**8%

*“Not compatible”*

**Value For Money**8%

*“Expensive”*

**Functionality-Overall**7%

*“either way the diaphragms did not work”*

**Durability**5%

*“after using them for about a week they were broken in”*

**Advertised Vs Actual Product**3%

*“its not the same”*

**Strength**3%

*“They feel a bit flimsier than the ones that came with the pump”*

**Ease Of Use**3%

*“This makes it impossible to pour, measure, or take off without milk spilling EVERYWHERE”*

### **Top return reasons **

**Size-Overall**31%

**Value For Money**9%

**Functionality-Overall**9%

**Compatibility-Overall**8%

**Defective Material/Parts**8%

**Advertised Vs Actual Product**8%

**Leak-Proof**7%

**Product Condition**4%

**Breastfeeding Friendly**2%

**Width**2%