18mm Flange Spectra
FailThe top 5 brands take 98% of clicks, so 18mm Flange Spectra is a Fail.
- Flapen Score
- 38 / 100Ranks 1,756 of 2,472 Baby Products niches · −6 vs the category median of 4438
- Market size
- $241K/yr98K searches / yr
- 90-day growth
- -6.5%search demand this quarter
- Competition
- 73%top-5 click share · 6 brands · 8 sellers
Flapen Score
18mm Flange Spectra against its category
The dotted line is the Baby Products average. Past it, 18mm Flange Spectra is stronger. Inside it, weaker.
Market
The 18mm Flange Spectra market on Amazon at a glance
Shoppers on Amazon United States searched for 18mm Flange Spectra 98K times last year and spent an estimated $241K. The top 5 brands take 98% of clicks. Flapen scores it 38 out of 100, a Fail.
01 · Demand
An estimated 17.7% of those searches ended in a purchase.
Shoppers searched for this 98K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 17.7% of those searches ended in a purchase. Searches in the last 90 days moved -6.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated $241K a year.
- Searches, last 12 months
- 98K
- Growth, 90 days vs prior 90
- -6.5%
- Conversion, latest week
- 17.7%
- Market size, estimated
- $241Ka year
- Peak month
- January1.3× the quietest month
- Top search term
- 18mm flange insert18K searches a year
02 · Price
A sale here is worth $13.96.
Listings sell for $13.96 on average, from $6.90 to $32.51. Amazon reports units sold in ranges. This niche sold 15K to 20K a year. The average listing sells 1,250 to 1,500 of them. At $13.96 that is $17K to $21K a year per listing.
- Average price
- $13.96under the $15 to $100 sweet spot
- Price range
- $6.90–$32.51
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 15K–20K
- Units per listing a year
- 1,250–1,500
- Revenue per listing a year
- $17K–$21K
- Returns
- 5.9%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads and reviews.
92% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #33 within Breastfeeding. It carries 3,411 reviews at 4.52 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 92%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #33in Breastfeeding
- Average rating
- 4.52 starsAmazon United States average 4.42 stars
- Average reviews
- 3,411per listing
- Listings tracked
- 13
04 · Newcomers
0 of last year's 1 launches cleared the first-year sales bar.
1 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 31 months on average, so a newcomer is not facing entrenched names.
- Launched, last 12 months
- 1
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 31 months
Products
Top 18mm Flange Spectra products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 12, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Maymom 18mm Flange and Duckbill Valve Compatible with Spectra S1 Spectra S2 Spectra 9 Plus Not Original Spectra Pump Parts Replace Spectra S2 Pump Parts Spectra Flange Spectra Duckbill Valve
- Price
- $19.74
- Rating
- 4.6/5
- Reviews
- 6,022
- Age
- 3y ago

4Pcs Breast Pump Flange Insert 18mm Compatible with Momcozy/Spectra/Medela/eufy/Elvie/Lansinoh/Paruu P10 Breast Pump Fit for Momcozy M5/M9/M6/V2 Pro/V2 pro/S12 Pro/eufy E10 S1 S1 Pro 24mm Flange
- Price
- $7.92
- Rating
- 4.5/5
- Reviews
- 635
- Age
- 1y ago

Momstouch 18mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Breastpump Replacement to Spectra Pump Parts Not Original Replace Accessories.
- Price
- $16.77
- Rating
- 4.3/5
- Reviews
- 592
- Age
- 2y ago

Maymom 18mm Wide Neck Pump Part Compatible with Spectra S1/S2 Pumps; Incl Wide Mouth Flange; Not Original Spectra Flange; Replaces Shield; Compatible with Motif Luna Pumps
- Price
- $17.62
- Rating
- 4.7/5
- Reviews
- 7,932
- Age
- 3y ago

18mm Flange Inserts for 24mm Flange/Shield Compatible with Momcozy/Medela/MOMMED/Bellababy/Spectra Breast Pumps Pump Parts Replace (4PCS 18mm)
- Price
- $8.87
- Rating
- 4.4/5
- Reviews
- 1,539
- Age
- 2y ago
Trending
estimated 90-day click momentum
18mm Maymom MyFit Shields Pano Series; Compatible with Medela Breast Pump- PersonalFit Freestyle Harmony Maxi Freestyle Flex Connector; Connect to Maymom Widemouth/Narrow Connector 2pcs
- Price
- $15.53
- Rating
- 4.5/5
- Reviews
- 8,889
- Age
- 2y ago

6Pcs Breast Pump Flange Insert 18mm Compatible with Momcozy/Spectra/Medela/eufy/Elvie/Lansinoh/Paruu P10 Breast Pump Fit for Momcozy M5/M9/M6/V2 Pro/V2 pro/S12 Pro/eufy E10 S1 S1 Pro 24mm Flange
- Price
- $8.77
- Rating
- 4.5/5
- Reviews
- 253
- Age
- 1y ago

MOOMentaneous 18mm Flange and Duckbill Valve Compatible with Spectra S1/S2 and 9 Plus Not Original Spectra Pump Parts Replacement
- Price
- $12.30
- Rating
- 4.6/5
- Reviews
- 111
- Age
- 1y ago

4Pcs Breast Pump Flange Insert 18mm Compatible with Momcozy/Spectra/Medela/eufy/Elvie/Lansinoh/Paruu P10 Breast Pump Fit for Momcozy M5/M9/M6/V2 Pro/V2 pro/S12 Pro/eufy E10 S1 S1 Pro 24mm Flange
- Price
- $7.92
- Rating
- 4.5/5
- Reviews
- 635
- Age
- 1y ago

Momstouch 18mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Breastpump Replacement to Spectra Pump Parts Not Original Replace Accessories.
- Price
- $16.77
- Rating
- 4.3/5
- Reviews
- 592
- Age
- 2y ago
Newest
by launch date
6pcs Updated Silicone Flange Insert 18mm Compatible with Momcozy/Medela/Spectra/Eufy/Lansinoh/TSRETE/Elvie/NCVI/Paruu Breast Pump for 24mm Flange/Shield Breastfeeding Essential Replacement Pump Part
- Price
- $9.98
- Rating
- 4.2/5
- Reviews
- 169
- Age
- 10mo ago

Maymom Pump Parts Compatible with Spectra S2 S1 18mm Flange Valve Tube Bottle Backflow Protector Not Original Spectra S2 Replacement Pump Parts Duckbill Valve Bottle
- Price
- $32.51
- Rating
- 4.6/5
- Reviews
- 9,124
- Age
- 1y ago

6Pcs Breast Pump Flange Insert 18mm Compatible with Momcozy/Spectra/Medela/eufy/Elvie/Lansinoh/Paruu P10 Breast Pump Fit for Momcozy M5/M9/M6/V2 Pro/V2 pro/S12 Pro/eufy E10 S1 S1 Pro 24mm Flange
- Price
- $8.77
- Rating
- 4.5/5
- Reviews
- 253
- Age
- 1y ago

4Pcs Breast Pump Flange Insert 18mm Compatible with Momcozy/Spectra/Medela/eufy/Elvie/Lansinoh/Paruu P10 Breast Pump Fit for Momcozy M5/M9/M6/V2 Pro/V2 pro/S12 Pro/eufy E10 S1 S1 Pro 24mm Flange
- Price
- $7.92
- Rating
- 4.5/5
- Reviews
- 635
- Age
- 1y ago

IVARONAL Flange Insert 2PCS 18mm Compatible with Momcozy M9/M6/M5/S12 Pro/V1 Pro/V2 pro Spectra/Medela/Elvie/NCVI/TSRETE/eufy/Lansinoh/Paruu/MomMed Breast Pump 24mm Shields/Flanges (2pcs-18mm)
- Price
- $6.90
- Rating
- 4.5/5
- Reviews
- 848
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 73% of clicks. A locked shelf that new listings rarely crack.
Brands
6 falling
Sellers
8
Est. top-5 brand share
98%
Top 20: 100%
Est. top-5 click share
73%
Top 20: 100%
Open market
0%
- Maymom49%
- BDICOVE19%
- Momstouch15%
- TOVVILD9%
- MOOMentaneous6%
- IVARONAL2%
- Open — no brand owns it (0%)
Demand
18mm Flange Spectra search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.3×
Search terms
Top 18mm Flange Spectra search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- 18mm flange insert18K/yr
- spectra flange 18mm17K/yr
- 18mm flange spectra16K/yr
- 18 mm flange insert11K/yr
- spectra 18mm flange set11K/yr
- 18 mm flange spectra11K/yr
- spectra 18mm flange5K/yr
- 18mm flange5K/yr
- 18mm spectra flange2K/yr
- maymom 18mm flange spectra2K/yr
Reviews and returns
What reviews say buyers love and hate about 18mm Flange Spectra
We read the reviews and the return reasons for every product selling here.
“Order wrong size”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
21 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common 18mm Flange Spectra questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









