toilet sealant
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible17.8%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.5%return rate — above 5% kills the launch gate
Review moat
Good1,076.5avg incumbent reviews — the moat a new listing must climb
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Market size
Okay£103K£103K/yr · 80K searches
Avg price
Bad£7.26avg listing price — sweet spot $15–$100
Growth
Bad-26.1%90-day search growth — must beat 0% to launch
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
Price range
Bad£4.17–£11.68cheapest 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
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.No pronounced peak months · busiest ÷ quietest = 1.6×
Top toilet sealant search terms
- plumbers putty35K/yr
- plumbers mate20K/yr
- plumbers mait10K/yr
- boss white jointing compound5K/yr
- plumbers paste6K/yr
- plumbers mate putty3K/yr
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.
All 4 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
EVO-STIK Plumbers Mait 750g - Non-Setting Putty for Sanitary Joints - Permanant Flexibility - Waterproof
EVO-STIK£4.174.5★3,686 rev
Black Swan Stay Soft Plumbers Putty Flexible Sealant Seal Sink Tap Basin Bath (397 Grams)
LavaTap£8.254.5★11 rev
Everbuild 113 Plumbers Putty Beige 750 g
Sika£4.944.3★227 rev
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£11.684.3★382 rev
Newest
by launch dateBlack Swan Stay Soft Plumbers Putty Flexible Sealant Seal Sink Tap Basin Bath (397 Grams)
LavaTap£8.2511 rev
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£11.68382 rev
Everbuild 113 Plumbers Putty Beige 750 g
Sika£4.94227 rev
EVO-STIK Plumbers Mait 750g - Non-Setting Putty for Sanitary Joints - Permanant Flexibility - Waterproof
EVO-STIK£4.173,686 rev
Trending
90-day click momentumBlack Swan Stay Soft Plumbers Putty Flexible Sealant Seal Sink Tap Basin Bath (397 Grams)
LavaTap£8.254.5★
EVO-STIK Plumbers Mait 750g - Non-Setting Putty for Sanitary Joints - Permanant Flexibility - Waterproof
EVO-STIK£4.174.5★
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£11.684.3★
Everbuild 113 Plumbers Putty Beige 750 g
Sika£4.944.3★
What buyers say about toilet sealant
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent product”
“Does the job”
“easy to work with”
“a very easy positive experience to get a leak free professional job”
“it works and is cheap”
“Very effective, with little effort”
“It's sticky and durable so it's great”
“It's sticky and durable so it's great”
“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”
“The putty works perfectly”
What buyers complain about
“Tried numerous times, still leaking”
“Did not perform well”
Top return reasons
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.