---
title: "Toilet Tank Gasket — $85K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/toilet-tank-gasket"
last_updated: "2026-08-08T13:54:37.787Z"
locale: en
meta:
description: "Niche score 45/100 · $85K/yr market · 83K searches/yr · $12.06 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 45/100 · $85K/yr market · 83K searches/yr · $12.06 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Toilet Tank Gasket — $85K/yr Amazon US Niche (2026) - Flapen"
---
# **toilet tank gasket**
**Skip it**
A small market ($85K/yr) — this niche doesn't clear our bar today.
Market size 21Growth 24Conversion 81Competition 52Returns 51Price range 43Avg price 51Brand share 44Review moat 55Quality gap 50
**Conversion**
**Great****8.5%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****1,302.96**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Good****54%**
top-5 click share — leaders hold, buyers still browse
**Returns**
**Good****3.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Good****$12.06**
avg listing price — sweet spot $15–$100
**Quality gap**
**Good****4.5★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****78%**
top-5 brand share — brands hold most of the demand
**Price range**
**Okay****$4.47–$23.04**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Bad****-1.4%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$85K**
$85K/yr · 83K searches
According to Flapen's Amazon United States niche tracking, toilet tank gasket is a $85K/yr Amazon United States market (83K searches/yr). The top 5 brands hold 78% of demand. Verdict: Skip it — 45/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **toilet tank gasket market data**
- **Units sold / yr**
- **8K–10K**
- avg 100–250/product
- **Revenue / yr**
- **$96K–$121K**
- units × avg price
- **Conversion rate**
- **8.5%**
- **Avg BSR**
- **#527**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **69%**
- **Out of stock**
- **2.5%**
- **Avg brand age**
- **37 months**
- **Avg seller age**
- **159 days**
## **Competition & brand share**
The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**16 **▼falling
**Sellers**
**100**
**Top-5 brand share**
**78%**
Top 20: 100%
**Top-5 click share**
**54%**
Top 20: 92%
**Open market**
**18%**
- Fluidmaster24% - jamini22% - Loriyboe14% - Korky13% - GZJoSum6% - KESHEYOUXUAN3%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -1.4% search growth over the last 90 days.
2K1KSpike '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.2×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/toilet-tank-gasket/trend)
## **Top toilet tank gasket search terms**
- **toilet tank gasket**15K/yr+7.1%6.7% conv. - **toilet tank seal**13K/yr+10.9%7.5% conv. - **tank to bowl bolt & gasket kit**11K/yr-9.1%10.7% conv. - **tank to bowl gasket**11K/yr+8.0%6.9% conv. - **toilet tank to bowl gasket**6K/yr+22.8%6.9% conv. - **toilet tank to bowl gasket kit**7K/yr-13.0%9.8% conv. - **toilet tank seal kit**5K/yr+8.4%7.7% conv. - **toilet tank gasket seal**3K/yr-5.1%9.1% conv. - **toilet bowl gasket**3K/yr+5.5%3.8% conv. - **tank to bowl kit**3K/yr-8.4%9.5% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/toilet-tank-gasket/search-terms)
## **Top toilet tank gasket 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%5%$4K10%$8K15%$13K20%$17K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Toilet Tank to Bowl Bolt & Gasket Kit 304 Stainless Steel Bolts High-Density Foam Rubber Gasket Compatible with 2-Inch and 3-Inch Seals Easy Installation for Leak and Loose Connection Repairs**jamini**$11.49**4.6★93 rev](https://www.amazon.com/dp/B0FFMTKBT7) [2**Universal Toilet Tank to Bowl Gaskets Kit 2PCS 2.75 Heavy Duty Toilet Tank Bolts Replacement Fits Most 2-Inch and 3-Inch Leak Resistance Toilet Flush Valve Opening**Loriyboe**$9.94**4.3★91 rev](https://www.amazon.com/dp/B0FQMVD6P4) [3**Fluidmaster Tank To Bowl Bolt & Gasket Kit 6102**Fluidmaster**$5.31**4.5★3,349 rev](https://www.amazon.com/dp/B000BQRQ3W) [4**Fluidmaster 6100 Universal Tank-to-Bowl Gasket Replacement**Fluidmaster**$7.25**4.0★90 rev](https://www.amazon.com/dp/B000DZGNIU) [5**Universal Toilet Tank to Bowl Gasket & Tank to Bowl Bolts 2 Kind Gasket and 4 Pieces 5/16 * 3.15 Inch Toilet Tank Bolts Fit Most 2-Inch and 3-Inch Flush Valve Opening**GZJoSum**$17.46**4.4★84 rev](https://www.amazon.com/dp/B0CT2KZWM7)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**SATUY 2 Pcs Universal Toilet Tank to Bowl Gaskets Kit Stainless Steel Toilet Tank Bolts & 2 Kind Gasket Fits 2-Inch and 3-Inch Seals for Toilets Mounting Repair and Flush Valve Opening**SATUY**$9.86**8 rev7mo ago](https://www.amazon.com/dp/B0GCG1N4H8) [**Universal Toilet Tank Bolts & Rubber Gaskets**KESHEYOUXUAN**$16.72**33 rev7mo ago](https://www.amazon.com/dp/B0G6Y34J7J) [**Universal Toilet Tank to Bowl Repair Kit Fits 2 & 3 Flush Valve Openings**Tfuehn**$16.14**11 rev7mo ago](https://www.amazon.com/dp/B0G5PPR1PM) [**Universal Toilet Tank to Bowl Gaskets Kit 2PCS 2.75 Heavy Duty Toilet Tank Bolts Replacement Fits Most 2-Inch and 3-Inch Leak Resistance Toilet Flush Valve Opening**Loriyboe**$9.94**91 rev10mo ago](https://www.amazon.com/dp/B0FQMVD6P4) [**Toilet Tank to Bowl Gasket Kit with 3 Sets of 304 Stainless Steel Bolts Includes 2-Inch & 3-Inch Toilet Seal Gaskets Universal Repair Kit for 2-Piece Toilets Leak Fix Kit**jamini**$13.35**57 rev1y ago](https://www.amazon.com/dp/B0FGNM96CN)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Fluidmaster Tank To Bowl Bolt & Gasket Kit 6102**Fluidmaster**$5.31**4.5★**▲ 200%**](https://www.amazon.com/dp/B000BQRQ3W) [**Universal Toilet Tank Bolts & Rubber Gaskets**KESHEYOUXUAN**$16.72**4.4★**▲ 171%**](https://www.amazon.com/dp/B0G6Y34J7J) [**SATUY 2 Pcs Universal Toilet Tank to Bowl Gaskets Kit Stainless Steel Toilet Tank Bolts & 2 Kind Gasket Fits 2-Inch and 3-Inch Seals for Toilets Mounting Repair and Flush Valve Opening**SATUY**$9.86**4.5★**▲ 123%**](https://www.amazon.com/dp/B0GCG1N4H8) [**Universal Toilet Tank to Bowl Repair Kit Fits 2 & 3 Flush Valve Openings**Tfuehn**$16.14**3.8★**▲ 104%**](https://www.amazon.com/dp/B0G5PPR1PM) [**Toilet Tank to Bowl Bolt & Gasket Kit 304 Stainless Steel Bolts High-Density Foam Rubber Gasket Compatible with 2-Inch and 3-Inch Seals Easy Installation for Leak and Loose Connection Repairs**jamini**$11.49**4.6★**▲ 67%**](https://www.amazon.com/dp/B0FFMTKBT7)
**~~View all trending →~~**
## **What buyers say about toilet tank gasket**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Assembly/Installation**16%
*“perfect install”*
**Leak-Proof**11%
*“it won't leak”*
**Quality-Overall**11%
*“good quality components”*
**Size-Overall**10%
*“fit my toilet perfectly”*
**Advertised Vs Actual Product**10%
*“As advertised”*
**Value For Money**9%
*“Good deal”*
**Ease Of Use**5%
*“Easy peasy”*
**Efficiency**5%
*“Flapper works”*
**Instructions/User Manual/Troubleshooting**4%
*“instructions are clear”*
**Maintenance And Repair**3%
*“This kit worked great for repairs to my Gerber toilet”*
### **What buyers complain about **
**Leak-Proof**20%
*“Leaks”*
**Size-Overall**15%
*“Too small”*
**Functionality-Overall**7%
*“Didn't fix my issue”*
**Quality-Overall**5%
*“Poor Quality Control”*
**Compatibility-Overall**4%
*“Not compatible”*
**Durability**4%
*“Not durable”*
**Defective Material/Parts**3%
*“The tower part has already failed”*
**Assembly/Installation**3%
*“I couldnt tell until I tried to install it”*
**Drainage**2%
*“drain the lines”*
**Advertised Vs Actual Product**2%
*“Disappointing Universal Kit – Not as Advertised”*
### **Top return reasons **
**Size-Overall**68%
**Compatibility-Overall**9%
**Defective Material/Parts**6%
**Advertised Vs Actual Product**5%
**Leak-Proof**3%
**Functionality-Overall**3%
**Value For Money**2%
**Maintenance And Repair**1%
**Assembly/Installation**1%
**Product Condition**1%
## **Common questions**
- **Is toilet tank gasket profitable to sell on Amazon United States?**
- The niche generates $85K/yr across 26 tracked products. 1 of 5 products launched in the last 360 days are still selling. 90-day search growth is -1.4%. Flapen's verdict: Skip it (45/100).
- **How competitive is the toilet tank gasket niche?**
- 16 brands and 100 sellers compete. The top 5 products take 54% of clicks and top 5 brands hold 78% of demand.
- **What do buyers complain about in toilet tank gasket?**
- Top complaints mined from reviews: Leak-Proof, Size-Overall, Functionality-Overall. The return rate is 3.0%.
- **When does demand for toilet tank gasket peak?**
- Demand is steady year-round — the busiest month runs 1.2× the quietest.
- **What does it cost to enter the toilet tank gasket niche?**
- Listings span $4.47–$23.04; the average listing price is $12.06 (sweet spot $15–$100). The average incumbent carries 1,303 reviews — the moat a new listing must climb.
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