toilet tank gasket
Skip itA small market ($85K/yr) — this niche doesn't clear our bar today.
Conversion
Great8.5%search→purchase rate — share of searches ending in a sale
Review moat
Good1,302.96avg incumbent reviews — the moat a new listing must climb
Competition
Good54%top-5 click share — leaders hold, buyers still browse
Returns
Good3.0%return rate — above 5% kills the launch gate
Avg price
Good$12.06avg listing price — sweet spot $15–$100
Quality gap
Good4.5★avg incumbent rating — lower means beatable quality
Brand share
Okay78%top-5 brand share — brands hold most of the demand
Price range
Okay$4.47–$23.04cheapest 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
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.No pronounced peak months · busiest ÷ quietest = 1.2×
Top toilet tank gasket search terms
- toilet tank gasket15K/yr
- toilet tank seal13K/yr
- tank to bowl bolt & gasket kit11K/yr
- tank to bowl gasket11K/yr
- toilet tank to bowl gasket6K/yr
- toilet tank to bowl gasket kit7K/yr
- toilet tank seal kit5K/yr
- toilet tank gasket seal3K/yr
- toilet bowl gasket3K/yr
- tank to bowl kit3K/yr
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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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$11.494.6★93 rev
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$9.944.3★91 rev
Fluidmaster Tank To Bowl Bolt & Gasket Kit 6102
Fluidmaster$5.314.5★3,349 rev
Fluidmaster 6100 Universal Tank-to-Bowl Gasket Replacement
Fluidmaster$7.254.0★90 rev
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$17.464.4★84 rev
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$9.868 rev
Universal Toilet Tank Bolts & Rubber Gaskets
KESHEYOUXUAN$16.7233 rev
Universal Toilet Tank to Bowl Repair Kit Fits 2 & 3 Flush Valve Openings
Tfuehn$16.1411 rev
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$9.9491 rev
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$13.3557 rev
Trending
90-day click momentumFluidmaster Tank To Bowl Bolt & Gasket Kit 6102
Fluidmaster$5.314.5★
Universal Toilet Tank Bolts & Rubber Gaskets
KESHEYOUXUAN$16.724.4★
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$9.864.5★
Universal Toilet Tank to Bowl Repair Kit Fits 2 & 3 Flush Valve Openings
Tfuehn$16.143.8★
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$11.494.6★
What buyers say about toilet tank gasket
What buyers praise and complain about, mined from review topics.What buyers love
“perfect install”
“it won't leak”
“good quality components”
“fit my toilet perfectly”
“As advertised”
“Good deal”
“Easy peasy”
“Flapper works”
“instructions are clear”
“This kit worked great for repairs to my Gerber toilet”
What buyers complain about
“Leaks”
“Too small”
“Didn't fix my issue”
“Poor Quality Control”
“Not compatible”
“Not durable”
“The tower part has already failed”
“I couldnt tell until I tried to install it”
“drain the lines”
“Disappointing Universal Kit – Not as Advertised”
Top return reasons
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.