---
title: "Toilet Sealant — £103K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/diy-tools/toilet-sealant"
last_updated: "2026-07-31T08:56:00.517Z"
locale: en
meta:
description: "Niche score 35/100 · £103K/yr market · 80K searches/yr · £7.26 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 35/100 · £103K/yr market · 80K searches/yr · £7.26 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Toilet Sealant — £103K/yr Amazon UK Niche (2026) - Flapen"
---
# **toilet sealant**
**Skip it**
A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Market size 25Growth 12Conversion 99Competition 0Returns 97Price range 0Avg price 20Brand share 0Review moat 61Quality gap 58
**Conversion**
**Incredible****17.8%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.5%**
return rate — above 5% kills the launch gate
**Review moat**
**Good****1,076.5**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Market size**
**Okay****£103K**
£103K/yr · 80K searches
**Avg price**
**Bad****£7.26**
avg listing price — sweet spot $15–$100
**Growth**
**Bad****-26.1%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****100%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Price range**
**Bad****£4.17–£11.68**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, toilet sealant is a £103K/yr Amazon United Kingdom market (80K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 35/100.
Data updated Jul 22, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **toilet sealant market data**
- **Units sold / yr**
- **10K–13K**
- avg 1,500–2,000/product
- **Revenue / yr**
- **£73K–£91K**
- units × avg price
- **Conversion rate**
- **17.8%**
- **Avg BSR**
- **#497**
- **Page quality**
- **0%**
- **Prime**
- **75%**
- **Sponsored**
- **50%**
- **Out of stock**
- **10.3%**
- **Avg brand age**
- **49 months**
- **Avg seller age**
- **177 days**
## **Competition & brand share**
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**4 **▼falling
**Sellers**
**37**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**100%**
Top 20: 100%
**Open market**
**0%**
- EVO-STIK84% - LavaTap6% - Sika5% - Kudos-Trading4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -26.1% search growth over the last 90 days.
2K2KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/uk/diy-tools/toilet-sealant/trend)
## **Top toilet sealant search terms**
- **plumbers putty**35K/yr-25.0%11.2% conv. - **plumbers mate**20K/yr-18.1%15.1% conv. - **plumbers mait**10K/yr-30.2%18.6% conv. - **boss white jointing compound**5K/yr-28.1%0.9% conv. - **plumbers paste**6K/yr-29.9%1.7% conv. - **plumbers mate putty**3K/yr-52.8%16.9% conv. [**All search terms **](https://flapen.com/research/uk/diy-tools/toilet-sealant/search-terms)
## **Top toilet sealant products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%25%£26K50%£51K75%£77K100%£103K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 4 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**EVO-STIK Plumbers Mait 750g - Non-Setting Putty for Sanitary Joints - Permanant Flexibility - Waterproof**EVO-STIK**£4.17**4.5★3,686 rev](https://www.amazon.co.uk/dp/B0001P03TM) [2**Black Swan Stay Soft Plumbers Putty Flexible Sealant Seal Sink Tap Basin Bath (397 Grams)**LavaTap**£8.25**4.5★11 rev](https://www.amazon.co.uk/dp/B0D6C52FSY) [3**Everbuild 113 Plumbers Putty Beige 750 g**Sika**£4.94**4.3★227 rev](https://www.amazon.co.uk/dp/B0012RA2JY) [4**Kudos-Trading - Fernox 61016 Leak Sealer LS-X External Or Internal Water Pipe Leakage Repair Seal Jointing Compound 50g Plumbers Pipe Fitters DIY plumbers mait**Kudos-Trading**£11.68**4.3★382 rev](https://www.amazon.co.uk/dp/B0C4TRM1RN)
### **Newest**
by launch date
[**Black Swan Stay Soft Plumbers Putty Flexible Sealant Seal Sink Tap Basin Bath (397 Grams)**LavaTap**£8.25**11 rev2y ago](https://www.amazon.co.uk/dp/B0D6C52FSY) [**Kudos-Trading - Fernox 61016 Leak Sealer LS-X External Or Internal Water Pipe Leakage Repair Seal Jointing Compound 50g Plumbers Pipe Fitters DIY plumbers mait**Kudos-Trading**£11.68**382 rev3y ago](https://www.amazon.co.uk/dp/B0C4TRM1RN) [**Everbuild 113 Plumbers Putty Beige 750 g**Sika**£4.94**227 rev19y ago](https://www.amazon.co.uk/dp/B0012RA2JY) [**EVO-STIK Plumbers Mait 750g - Non-Setting Putty for Sanitary Joints - Permanant Flexibility - Waterproof**EVO-STIK**£4.17**3,686 rev19y ago](https://www.amazon.co.uk/dp/B0001P03TM)
### **Trending**
90-day click momentum
[**Black Swan Stay Soft Plumbers Putty Flexible Sealant Seal Sink Tap Basin Bath (397 Grams)**LavaTap**£8.25**4.5★**▲ 173%**](https://www.amazon.co.uk/dp/B0D6C52FSY) [**EVO-STIK Plumbers Mait 750g - Non-Setting Putty for Sanitary Joints - Permanant Flexibility - Waterproof**EVO-STIK**£4.17**4.5★**— 2%**](https://www.amazon.co.uk/dp/B0001P03TM) [**Kudos-Trading - Fernox 61016 Leak Sealer LS-X External Or Internal Water Pipe Leakage Repair Seal Jointing Compound 50g Plumbers Pipe Fitters DIY plumbers mait**Kudos-Trading**£11.68**4.3★**▼ 11%**](https://www.amazon.co.uk/dp/B0C4TRM1RN) [**Everbuild 113 Plumbers Putty Beige 750 g**Sika**£4.94**4.3★**▼ 46%**](https://www.amazon.co.uk/dp/B0012RA2JY)
## **What buyers say about toilet sealant**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**25%
*“Excellent product”*
**Advertised Vs Actual Product**23%
*“Does the job”*
**Ease Of Use**12%
*“easy to work with”*
**Leak-Proof**10%
*“a very easy positive experience to get a leak free professional job”*
**Value For Money**7%
*“it works and is cheap”*
**Efficiency**7%
*“Very effective, with little effort”*
**Adhesion/Stickiness**5%
*“It's sticky and durable so it's great”*
**Durability**3%
*“It's sticky and durable so it's great”*
**Water Resistance**2%
*“Very plyable, easy to put on, put on the hottest day of the year, a leak that has been on my conservatory box guttering, have to see if it works, ive tried everything else, ive sprayed spray seal over it, very very small leak for 28 years”*
**Functionality-Overall**2%
*“The putty works perfectly”*
### **What buyers complain about **
**Leak-Proof**50%
*“Tried numerous times, still leaking”*
**Functionality-Overall**33%
*“Did not perform well”*
### **Top return reasons **
**Adhesion/Stickiness**27%
**Leak-Proof**27%
**Advertised Vs Actual Product**18%
**Functionality-Overall**18%
**Value For Money**5%
**Ease Of Use**5%
## **Common questions**
- **Is toilet sealant profitable to sell on Amazon United Kingdom?**
- The niche generates £103K/yr across 4 tracked products. 90-day search growth is -26.1%. Flapen's verdict: Skip it (35/100).
- **How competitive is the toilet sealant niche?**
- 4 brands and 37 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in toilet sealant?**
- Top complaints mined from reviews: Leak-Proof, Functionality-Overall. The return rate is 0.5%.
- **When does demand for toilet sealant peak?**
- Demand is steady year-round — the busiest month runs 1.6× the quietest.
- **What does it cost to enter the toilet sealant niche?**
- Listings span £4.17–£11.68; the average listing price is £7.26 (sweet spot $15–$100). The average incumbent carries 1,077 reviews — the moat a new listing must climb.
## **Related niches in DIY & Tools**
- 68 [**cardboard cutter**](https://flapen.com/research/uk/diy-tools/cardboard-cutter)£343K/yr+30.6%**Worth a look**- 68 [**door canopy**](https://flapen.com/research/uk/diy-tools/door-canopy)£202K/yr+187.7%**Worth a look**- 68 [**fence post repair**](https://flapen.com/research/uk/diy-tools/fence-post-repair)£359K/yr-8.2%**Worth a look**- 68 [**cat window guard**](https://flapen.com/research/uk/diy-tools/cat-window-guard)£98K/yr+413.1%**Worth a look**- 68 [**sun shade**](https://flapen.com/research/uk/diy-tools/sun-shade)£202K/yr+187.7%**Worth a look**- 69 [**brass hose connector**](https://flapen.com/research/uk/diy-tools/brass-hose-connector)£66K/yr+122.8%**Worth a look**[**All DIY & Tools niches **](https://flapen.com/research/uk/diy-tools)