---
title: "Kohler Canister Flush Valve Seal — $992K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/kohler-canister-flush-valve-seal"
last_updated: "2026-08-08T15:51:02.178Z"
locale: en
meta:
description: "Niche score 51/100 · $992K/yr market. Brand-locked demand (top 5 brands take 93% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 51/100 · $992K/yr market. Brand-locked demand (top 5 brands take 93% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Kohler Canister Flush Valve Seal — $992K/yr Amazon US Niche (2026) - Flapen"
---
# **kohler canister flush valve seal**
**Worth a look**
Shows searches that convert (10.3% search→purchase), but brand-locked demand (top 5 brands take 93% of clicks) keeps it on the watch list.
Market size 77Growth 25Conversion 88Competition 42Returns 48Price range 66Avg price 82Brand share 17Review moat 41Quality gap 42
**Conversion**
**Great****10.3%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$17.91**
avg listing price — sweet spot $15–$100
**Market size**
**Great****$992K**
$992K/yr · 537K searches
**Price range**
**Good****$6.74–$30.90**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Okay****3.1%**
return rate — above 5% kills the launch gate
**Competition**
**Okay****60%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****2,397.93**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-0.5%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****93%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, kohler canister flush valve seal is a $992K/yr Amazon United States market (537K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Worth a look — 51/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **kohler canister flush valve seal market data**
- **Units sold / yr**
- **40K–50K**
- avg 1,500–2,000/product
- **Revenue / yr**
- **$716K–$896K**
- units × avg price
- **Conversion rate**
- **10.3%**
- **Avg BSR**
- **#1,688**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **93%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **39 months**
- **Avg seller age**
- **145 days**
## **Competition & brand share**
The top 5 products take 60% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**10 **▲rising
**Sellers**
**120**
**Top-5 brand share**
**93%**
Top 20: 100%
**Top-5 click share**
**60%**
Top 20: 93%
**Open market**
**5%**
- Kohler80% - Ullnosoo4% - hansengroyi4% - RNTKAB3% - Qualihome2% - Hidnvefen2% - Open — no brand owns it (4 brands, 5%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -0.5% search growth over the last 90 days.
10K6KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 4.8×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/kohler-canister-flush-valve-seal/trend)
## **Top kohler canister flush valve seal search terms**
- **kohler toilet tank parts**256K/yr-3.5%9.6% conv. - **kohler toilet parts**40K/yr-10.0%4.8% conv. - **kohler flush valve kit**27K/yr-0.9%7.7% conv. - **kohler parts replacement**37K/yr+6.3%0.5% conv. - **kohler toilet flush valve kit**14K/yr+139.4%8.4% conv. - **kohler toilet replacement parts**18K/yr+17.6%4.0% conv. - **kohler flush valve**21K/yr-22.1%9.4% conv. - **kohler gp1059291**12K/yr+8.0%18.7% conv. - **gp1059291**13K/yr+11.9%15.1% conv. - **kohler flush valve seal**13K/yr+13.1%10.1% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/kohler-canister-flush-valve-seal/search-terms)
## **Top kohler canister flush valve seal 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%$50K10%$99K15%$149K20%$198K1101001K10K100K 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**Kohler Genuine Part Gp1083167 Silent Fill Valve Kit For All Kohler Class Five Toilets 12.5 x 3.5 x 3**Kohler**$17.94**4.6★10,056 rev](https://www.amazon.com/dp/B001GZVSX6) [2**KOHLER GENUINE PART 1188998 2 Toilet Canister Flush Valve Kit**Kohler**$17.57**4.7★1,435 rev](https://www.amazon.com/dp/B00CXRZH1U) [3**Kohler Genuine Part 1083980 3 Toilet Canister Flush Valve Kit**Kohler**$21.06**4.6★4,819 rev](https://www.amazon.com/dp/B0056V9DDS) [4**KOHLER Genuine Part Gp1059291 Canister Seal Seal for All Single Flush Class 5 and Class 6 Canister Toilets Chemical Resistant**Kohler**$6.74**4.8★7,649 rev](https://www.amazon.com/dp/B002JE882C) [5**KOHLER 3 Toilet Flush Valve Kit Black Compatible with Kohler Wellworth toilets 3 Canister with a 3 Outlet GENUINE PART 1069722**Kohler**$19.63**4.6★2,533 rev](https://www.amazon.com/dp/B005UNPSAY)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**1216611 Flush Valve Kit Canister Valve Assembly Replacement for Kohler Cimarron Toilets 1.28 GPF AquaPiston Flush Valve with Gasket**LavishStream**$26.44**5 rev6mo ago](https://www.amazon.com/dp/B0GKFKM7YS) [**2 Toilet Canister Flush Valve Kit for Kohler 1216611 Compatible with Kohler 1.28 gaff Cimarron Toilets 3 Canister with a 2 Outlet Toilet Repair Kit Inside Tank**hansengroyi**$25.52**8 rev6mo ago](https://www.amazon.com/dp/B0GK1CMBNY) [**Flush Valve Seal for Kohler GP1059291 2 Pack Upgraded Silicone Canister Seal Replacement for Kohler Toilets Stops Leaks & Ghost Flushing Easy Install Fits K-GP1059291 K-4436 Models**todbown**$7.97**45 rev6mo ago](https://www.amazon.com/dp/B0GJ54WYXL) [**2 Toilet Canister Flush Valve Kit for Kohler 1188999 Compatible with Kohler Cimarron Tank 3 Canister with a 2 Outlet**hansengroyi**$26.86**3 rev7mo ago](https://www.amazon.com/dp/B0GCWNCG2Q) [**Canister Repair Kit Compatible with Kohler GP1229656 for Single Flush Canister Toilets Includes Center Guide Cap & Chain WC Tank Replacement Kit**hansengroe**$10.33**17 rev1y ago](https://www.amazon.com/dp/B0FDG5WL22)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Flush Valve Seal for Kohler GP1059291 2 Pack Upgraded Silicone Canister Seal Replacement for Kohler Toilets Stops Leaks & Ghost Flushing Easy Install Fits K-GP1059291 K-4436 Models**todbown**$7.97**4.7★**▲ 249%**](https://www.amazon.com/dp/B0GJ54WYXL) [**1216611 Flush Valve Kit Canister Valve Assembly Replacement for Kohler Cimarron Toilets 1.28 GPF AquaPiston Flush Valve with Gasket**LavishStream**$26.44**3.7★**▲ 212%**](https://www.amazon.com/dp/B0GKFKM7YS) [**2 Toilet Canister Flush Valve Kit for Kohler 1216611 Compatible with Kohler 1.28 gaff Cimarron Toilets 3 Canister with a 2 Outlet Toilet Repair Kit Inside Tank**hansengroyi**$25.52**3.5★**▲ 205%**](https://www.amazon.com/dp/B0GK1CMBNY) [**2 Toilet Canister Flush Valve Kit for Kohler 1188999 Compatible with Kohler Cimarron Tank 3 Canister with a 2 Outlet**hansengroyi**$26.86**5.0★**▲ 205%**](https://www.amazon.com/dp/B0GCWNCG2Q) [**Canister Repair Kit Compatible with Kohler GP1229656 for Single Flush Canister Toilets Includes Center Guide Cap & Chain WC Tank Replacement Kit**hansengroe**$10.33**4.4★**▲ 58%**](https://www.amazon.com/dp/B0FDG5WL22)
**~~View all trending →~~**
## **What buyers say about kohler canister flush valve seal**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Assembly/Installation**26%
*“Easy fix”*
**Size-Overall**15%
*“Fits Like a Glove”*
**Advertised Vs Actual Product**8%
*“As advertised”*
**Quality-Overall**7%
*“The build quality feels solid”*
**Value For Money**6%
*“Great value”*
**Ease Of Use**6%
*“Easy as pie”*
**Efficiency**5%
*“Surprising how much better the toilet works now”*
**Leak-Proof**4%
*“No leaks”*
**Instructions/User Manual/Troubleshooting**4%
*“Instructions are clear”*
**Maintenance And Repair**3%
*“Just another DIY repair that most anyone can accomplish”*
### **What buyers complain about **
**Leak-Proof**15%
*“It leaks”*
**Noise Level**9%
*“Random noises”*
**Durability**7%
*“Broken again, 1 year later”*
**Quality-Overall**7%
*“Not an adequate replacement quality wise”*
**Functionality-Overall**5%
*“Not effective for me”*
**Size-Overall**5%
*“a bit smaller”*
**Product Condition**4%
*“Item was used”*
**Assembly/Installation**3%
*“INSTALLATION is terrible”*
**Value For Money**3%
*“it came with a substantial cost”*
**Design-Overall**3%
*“I found it hard to believe that was a design flaw”*
### **Top return reasons **
**Size-Overall**48%
**Defective Material/Parts**10%
**Compatibility-Overall**10%
**Leak-Proof**7%
**Advertised Vs Actual Product**6%
**Functionality-Overall**4%
**Value For Money**3%
**Product Condition**3%
**Assembly/Installation**2%
**Color**1%
## **Common questions**
- **Is kohler canister flush valve seal profitable to sell on Amazon United States?**
- The niche generates $992K/yr across 27 tracked products. 2 of 4 products launched in the last 360 days are still selling. 90-day search growth is -0.5%. Flapen's verdict: Worth a look (51/100).
- **How competitive is the kohler canister flush valve seal niche?**
- 10 brands and 120 sellers compete. The top 5 products take 60% of clicks and top 5 brands hold 93% of demand.
- **What do buyers complain about in kohler canister flush valve seal?**
- Top complaints mined from reviews: Leak-Proof, Noise Level, Durability. The return rate is 3.1%.
- **When does demand for kohler canister flush valve seal peak?**
- Demand peaks in Apr–May–Jun–Jul; the busiest month runs 4.8× the quietest.
- **What does it cost to enter the kohler canister flush valve seal niche?**
- Listings span $6.74–$30.90; the average listing price is $17.91 (sweet spot $15–$100). The average incumbent carries 2,398 reviews — the moat a new listing must climb.
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