---
title: "Gasket Sealant — £89K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/automotive/gasket-sealant"
last_updated: "2026-08-07T12:50:40.065Z"
locale: en
meta:
description: "Niche score 43/100 · £89K/yr market · 98K searches/yr · £7.32 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 43/100 · £89K/yr market · 98K searches/yr · £7.32 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Gasket Sealant — £89K/yr Amazon UK Niche (2026) - Flapen"
---
# **gasket sealant**
**Skip it**
Prices mostly outside the sweet spot ($3.23–$13.48) — this niche doesn't clear our bar today.
Market size 22Growth 30Conversion 95Competition 31Returns 97Price range 0Avg price 20Brand share 43Review moat 50Quality gap 30
**Returns**
**Incredible****0.7%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****12.5%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****1,498.4**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Okay****79%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****66%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Okay****+4.0%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****£89K**
£89K/yr · 98K searches
**Avg price**
**Bad****£7.32**
avg listing price — sweet spot $15–$100
**Price range**
**Bad****£3.23–£13.48**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, gasket sealant is a £89K/yr Amazon United Kingdom market (98K searches/yr). The top 5 brands hold 79% of demand. Verdict: Skip it — 43/100.
Data updated Jul 17, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **gasket sealant market data**
- **Units sold / yr**
- **10K–13K**
- avg 500–750/product
- **Revenue / yr**
- **£73K–£92K**
- units × avg price
- **Conversion rate**
- **12.5%**
- **Avg BSR**
- **#128**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **80%**
- **Out of stock**
- **0.4%**
- **Avg brand age**
- **53 months**
- **Avg seller age**
- **177 days**
## **Competition & brand share**
The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**11 **▼falling
**Sellers**
**56**
**Top-5 brand share**
**79%**
Top 20: 100%
**Top-5 click share**
**66%**
Top 20: 100%
**Open market**
**13%**
- Visbella22% - LOCBONDSO18% - J-B Weld15% - Wynn's13% - flintronic12% - TUFROX8% - Open — no brand owns it (5 brands, 13%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +4.0% search growth over the last 90 days.
2K2KSpike '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/uk/automotive/gasket-sealant/trend)
## **Top gasket sealant search terms**
- **gasket sealant**33K/yr+6.5%12.5% conv. - **rtv gasket sealant**11K/yr+6.9%13.7% conv. - **rtv silicone**8K/yr+5.4%6.8% conv. - **instant gasket**9K/yr-6.0%14.1% conv. - **gasket maker**6K/yr-5.7%9.2% conv. - **rtv sealant**6K/yr-21.2%10.5% conv. - **rtv**4K/yr+3.8%9.9% conv. - **petrol resistant sealant**3K/yr+58.6%1.9% conv. - **gasket sealer**3K/yr+5.6%11.5% conv. - **sump gasket sealant**3K/yr+10.3%8.8% conv. [**All search terms **](https://flapen.com/research/uk/automotive/gasket-sealant/search-terms)
## **Top gasket 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%10%£9K20%£18K30%£27K40%£36K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 15 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Visbella High Temperature RTV Silicone Gasket Maker Sealed Oil Resistant Waterproof Quick Dry Liquid for Bonding Internal Combustion Steam Turbines Automotive Engine Parts 3.7OZ (BLACK)**Visbella**£5.73**4.6★525 rev](https://www.amazon.co.uk/dp/B0BQ37NM5M) [2**LOCBONDSO High Temperature Silicone Sealant Engine - Antifreeze-resistant Heat-resistant Sealant for Oil Pan & Valve Cover Gasket (RTV 85g)**LOCBONDSO**£6.28**4.5★58 rev](https://www.amazon.co.uk/dp/B0FG84W7SC) [3**Wynns Black Gasket Maker - Heat & Cold Resistant - Waterproof & Oil Resistant - Ideal for Engine Components & Automotive Applications - 200ml**Wynn's**£13.48**4.7★574 rev](https://www.amazon.co.uk/dp/B000Y8U9OK) [4**J-B Weld 31314 High Temperature RTV Silicone Gasket Maker and Sealant - Red - 3 oz.**J-B Weld**£7.58**4.6★7,002 rev](https://www.amazon.co.uk/dp/B00ID8IUJY) [5**RTV Silicone Instant Gasket Maker Grey 45g Tube High Temp 662F Flexible Sealant for Automotive Engine Exhaust and Industrial Repairs Oil & Fluid Resistant Adhesive**TUFROX**£3.23**4.8★37 rev](https://www.amazon.co.uk/dp/B0FDL4D8KN)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Comioke 2PCS High Temperature RTV Silicone Instant Gasket Silicone Engine Repair Gasket Seal Sealant Glue Heat Resistant from -80F to 600F Water Resistance Anti-Freeze Remain Flexible black**Comioke**£5.10**11 rev10mo ago](https://www.amazon.co.uk/dp/B0FPG23BQC) [**LOCBONDSO High Temperature Silicone Sealant Engine - Antifreeze-resistant Heat-resistant Sealant for Oil Pan & Valve Cover Gasket (RTV 85g)**LOCBONDSO**£6.28**58 rev1y ago](https://www.amazon.co.uk/dp/B0FG84W7SC) [**RTV Silicone Instant Gasket Maker Grey 45g Tube High Temp 662F Flexible Sealant for Automotive Engine Exhaust and Industrial Repairs Oil & Fluid Resistant Adhesive**TUFROX**£3.23**37 rev1y ago](https://www.amazon.co.uk/dp/B0FDL4D8KN) [**Visbella Gasket Maker Oil Resistant Sensor Safe Neutral RTV Silicone Sealant Non-Corrosive High Flexibility Ideal for Domestic & Older Vehicles 99g (Grey)**Visbella**£5.84**413 rev1y ago](https://www.amazon.co.uk/dp/B0F4MT4FW6) [**Realth Silicone Gasket Maker 1 PC 368g Black RTV for Automotive**Realth**£11.27**1,461 rev1y ago](https://www.amazon.co.uk/dp/B0DP4P8J5X)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Comioke 2PCS High Temperature RTV Silicone Instant Gasket Silicone Engine Repair Gasket Seal Sealant Glue Heat Resistant from -80F to 600F Water Resistance Anti-Freeze Remain Flexible black**Comioke**£5.10**4.6★**▲ 136%**](https://www.amazon.co.uk/dp/B0FPG23BQC) [**J-B Weld 32329 Ultimate Black RTV Silicone Gasket Maker and Sealant 3. Fluid_Ounces**J-B Weld**£8.40**4.6★**▲ 99%**](https://www.amazon.co.uk/dp/B00LIRGB84) [**RTV Silicone Instant Gasket Maker Grey 45g Tube High Temp 662F Flexible Sealant for Automotive Engine Exhaust and Industrial Repairs Oil & Fluid Resistant Adhesive**TUFROX**£3.23**4.8★**▲ 63%**](https://www.amazon.co.uk/dp/B0FDL4D8KN) [**LOCBONDSO High Temperature Silicone Sealant Engine - Antifreeze-resistant Heat-resistant Sealant for Oil Pan & Valve Cover Gasket (RTV 85g)**LOCBONDSO**£6.28**4.5★**▲ 53%**](https://www.amazon.co.uk/dp/B0FG84W7SC) [**flintronic RTV Engine Sealant 85ml Silicone Gasket Sealant High Temperature Silicone Sealant Oil Water Resistance Anti-Freeze Sealing for Automotive Motorbike Machine Equipment Repairing (Black)**flintronic**£5.71**4.6★**▲ 49%**](https://www.amazon.co.uk/dp/B0DJ38SXTT)
**~~View all trending →~~**
## **What buyers say about gasket sealant**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**25%
*“Great product, as described, arrived on time”*
**Advertised Vs Actual Product**21%
*“Works well as usual”*
**Value For Money**13%
*“Reasonable price paid for this”*
**Leak-Proof**9%
*“No leakage”*
**Ease Of Use**9%
*“Easy to use”*
**Durability**6%
*“has held well since being used”*
**Efficiency**5%
*“Did the job”*
**Lubrication**2%
*“Bought to resale a transit van sump, it did the job without any problems, resealed,Torqued up sump bolts after 2hrs and let it cure for 24hrs before I added oil and the sump was oil tight not a drip of oil in sight,would recommend this product”*
**Instructions/User Manual/Troubleshooting**2%
*“Followed the instructions, 2mm bead, leave alone to skin over, and assembled”*
**Certifications**2%
*“Good product - tested to 750 degrees”*
### **What buyers complain about **
**Ease Of Use**18%
*“Difficult to use”*
**Quality-Overall**13%
*“Poor quality”*
**Instructions/User Manual/Troubleshooting**10%
*“came with minimal to no direction of use”*
**Value For Money**8%
*“wasted a significant amount of product”*
**Natural Resource Wastage**7%
*“wasted a significant amount of product”*
**Advertised Vs Actual Product**5%
*“Didnt work as described awful product”*
**Shrinkage Resistance**5%
*“Not red and it shrinks”*
**Ease Of Cleaning**5%
*“What a mess”*
**Spray/Flow**5%
*“Arrived without the nozzle”*
**Color**5%
*“turns out it bright orange”*
### **Top return reasons **
**Functionality-Overall**21%
**Defective Material/Parts**11%
**Leak-Proof**9%
**Compatibility-Overall**7%
**Ease Of Use**7%
**Adhesion/Stickiness**6%
**Advertised Vs Actual Product**6%
**Color**6%
**Assembly/Installation**4%
**Spray/Flow**3%
## **Common questions**
- **Is gasket sealant profitable to sell on Amazon United Kingdom?**
- The niche generates £89K/yr across 15 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +4.0%. Flapen's verdict: Skip it (43/100).
- **How competitive is the gasket sealant niche?**
- 11 brands and 56 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 79% of demand.
- **What do buyers complain about in gasket sealant?**
- Top complaints mined from reviews: Ease Of Use, Quality-Overall, Instructions/User Manual/Troubleshooting. The return rate is 0.7%.
- **When does demand for gasket sealant peak?**
- Demand is steady year-round — the busiest month runs 1.6× the quietest.
- **What does it cost to enter the gasket sealant niche?**
- Listings span £3.23–£13.48; the average listing price is £7.32 (sweet spot $15–$100). The average incumbent carries 1,498 reviews — the moat a new listing must climb.
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