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Leak Sealer

Fail

Prices span $4.17–$13.39, mostly outside the sweet spot, so Leak Sealer is a Fail.

Flapen Score
48
48 / 100
Ranks 1,131 of 2,225 DIY & Tools niches · −1 vs the category median of 49
Market size
£68K/yr94K searches / yr
90-day growth
-13.1%search demand this quarter
Competition
54%top-5 click share · 19 brands · 138 sellers

Flapen Score

Leak Sealer against its category

The dotted line is the DIY & Tools average. Past it, Leak Sealer is stronger. Inside it, weaker.

48Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Leak Sealer market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Leak Sealer 94K times last year and spent an estimated £68K. The top 5 brands take 61% of clicks. Flapen scores it 48 out of 100, a Fail.

01 · Demand

An estimated 8.8% of those searches ended in a purchase.

Shoppers searched for this 94K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 8.8% of those searches ended in a purchase. Searches in the last 90 days moved -13.1% against the 90 days before. Searches, conversion and average price together put the market at an estimated £68K a year.

Searches, last 12 months
94K
Growth, 90 days vs prior 90
-13.1%
Conversion, latest week
8.8%
Market size, estimated
£68Ka year
Peak month
October1.8× the quietest month
Top search term
leak sealer19K searches a year

02 · Price

A sale here is worth £8.24.

Listings sell for £8.24 on average, from £4.17 to £13.39. Amazon reports units sold in ranges. This niche sold 6K to 8K a year. The average listing sells 100 to 250 of them. At £8.24 that is £824 to £2K a year per listing.

Average price
£8.24under the $15 to $100 sweet spot
Price range
£4.17–£13.39
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
6K–8K
Units per listing a year
100–250
Revenue per listing a year
£824–£2K
Returns
0.7%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is reviews.

78% of listings pay for placement with sponsored ads. 96% ship with Prime. On an average day, 3.6% of listings are out of stock. The average listing ranks #164 within Adhesives & Sealers. It carries 4,464 reviews at 4.29 stars, so a new listing needs social proof before a better product.

Sponsored listings
78%
Prime listings
96%
Out of stock, average day
3.6%
Average rank
#164in Adhesives & Sealers
Average rating
4.29 starsAmazon United Kingdom average 4.36 stars
Average reviews
4,464per listing
Listings tracked
23

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 53 months on average, so the names here are settling in.

Launched, last 12 months
1
Successful launches
0Amazon's first-year sales bar
Average brand age
53 months

Products

Top Leak Sealer 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 22, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 54% of clicks. Leaders hold, but buyers still shop past them.

£0£3K£7K£10K£14K1101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

19 falling

Sellers

138

Est. top-5 brand share

61%

Top 20: 100%

Est. top-5 click share

54%

Top 20: 97%

Open market

33%

  • Kudos-Trading18%
  • Fernox18%
  • Polar Specialist Coatings9%
  • 1ABOVE8%
  • Duck7%
  • Tiger Tape6%

Demand

Leak Sealer search demand

Weekly searches over the year, seasonality beneath. Pick a range.

5K4KSpike '24Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.8×

Search terms

Top Leak Sealer search terms shoppers use

The exact words shoppers type, with estimated yearly volume, growth, and conversion.

  • leak sealer19K/yr
  • water leak sealant10K/yr
  • pipe sealant for leaking water pipes9K/yr
  • plumbing sealant7K/yr
  • fernox ls-x leak sealer7K/yr
  • stop leak5K/yr
  • pipe sealant6K/yr
  • leak sealant5K/yr
  • radiator leak sealer6K/yr
  • lsx3K/yr

Reviews and returns

What reviews say buyers love and hate about Leak Sealer

We read the reviews and the return reasons for every product selling here.

16%of positive reviews mention “Advertised Vs Actual Product”
27%of negative reviews mention “Leak-Proof”
0.7%of orders come back
“got a leak”
A buyer, on “Leak-Proof”27% of negative reviews mention the same topic

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.

17 topics

NegativePositive

FAQ

Common Leak Sealer 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