---
title: "Black Caulk — $313K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/black-caulk"
last_updated: "2026-08-09T20:40:39.169Z"
locale: en
meta:
description: "Niche score 54/100 · $313K/yr market · 186K searches/yr. A concentrated shelf (top 5 take 65% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 54/100 · $313K/yr market · 186K searches/yr. A concentrated shelf (top 5 take 65% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Black Caulk — $313K/yr Amazon US Niche (2026) - Flapen"
---
# **black caulk**
**Worth a look**
Shows searches that convert (13.8% search→purchase), but a concentrated shelf (top 5 take 65% of clicks) keeps it on the watch list.
Market size 52Growth 37Conversion 96Competition 33Returns 95Price range 52Avg price 52Brand share 43Review moat 48Quality gap 48
**Conversion**
**Incredible****13.8%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.9%**
return rate — above 5% kills the launch gate
**Market size**
**Good****$313K**
$313K/yr · 186K searches
**Avg price**
**Good****$12.19**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$5.79–$24.93**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****1,723.41**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Okay****79%**
top-5 brand share — brands hold most of the demand
**Growth**
**Okay****+9.8%**
90-day search growth — must beat 0% to launch
**Competition**
**Okay****65%**
top-5 click share — leaders hold, buyers still browse
According to Flapen's Amazon United States niche tracking, black caulk is a $313K/yr Amazon United States market (186K searches/yr). The top 5 brands hold 79% of demand. Verdict: Worth a look — 54/100.
Data updated Jul 8, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **black caulk market data**
- **Units sold / yr**
- **25K–30K**
- avg 1,500–2,000/product
- **Revenue / yr**
- **$305K–$366K**
- units × avg price
- **Conversion rate**
- **13.8%**
- **Avg BSR**
- **#1,077**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **76%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **58 months**
- **Avg seller age**
- **165 days**
## **Competition & brand share**
The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**12 **▼falling
**Sellers**
**90**
**Top-5 brand share**
**79%**
Top 20: 100%
**Top-5 click share**
**65%**
Top 20: 100%
**Open market**
**17%**
- DAP44% - ADVANCEDSIL13% - OB18% - Permatex7% - PAULINN7% - professional soma fix4% - Open — no brand owns it (6 brands, 17%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +9.8% search growth over the last 90 days.
5K4KSpike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/us/automotive/black-caulk/trend)
## **Top black caulk search terms**
- **black caulk**76K/yr+2.1%12.3% conv. - **black caulking waterproof**33K/yr+33.4%13.9% conv. - **black silicone caulk**32K/yr+12.6%14.0% conv. - **black caulking**14K/yr-4.9%11.7% conv. - **silicone caulk black**5K/yr+25.8%13.1% conv. - **black caulk kitchen and bath**6K/yr-9.5%9.6% conv. - **black caulking waterproof outdoor**5K/yr+72.1%16.9% conv. - **matte black caulk**3K/yr+8.8%2.8% conv. - **black exterior caulk**3K/yr+73.2%22.0% conv. - **caulk black**3K/yr+6.2%12.3% conv. [**All search terms **](https://flapen.com/research/us/automotive/black-caulk/search-terms)
## **Top black caulk 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%$31K20%$63K30%$94K40%$125K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 17 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**DAP 7079818280 DYNAFLEX 230 Black Raw Building Material 10.1 oz**DAP**$7.02**4.6★891 rev](https://www.amazon.com/dp/B000BQWXEO) [2**DAP Dynaflex Ultra Advanced Exterior Sealant Black 10.1 Oz (7079818220)**DAP**$8.68**4.7★483 rev](https://www.amazon.com/dp/B08JD2X9T9) [3**Black Silicone Sealant & Caulk Tube with Finishing Tool Weatherproof Flexible Strong Adhesion for Bathroom Roof Window and Automotive Sealing**ADVANCEDSIL**$9.41**4.3★678 rev](https://www.amazon.com/dp/B0FP4SV74B) [4**OB1 Universal Caulk Sealant & Adhesive Black 10.1oz | Professional Grade Premium All-in-One Advanced Hybrid 3-in1 | Water Resistant Internal & External | Shrink Crack UV & Fade Resistant | 1 Cartridge**OB1**$10.38**4.2★160 rev](https://www.amazon.com/dp/B0G4SDZ4DL) [5**Permatex 81158 Black Silicone Adhesive Sealant 3 oz. Tube Pack of 1**Permatex**$5.79**4.6★11,710 rev](https://www.amazon.com/dp/B000AL6WLA)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**SHIELDOM Silicone Sealant Adhesive Silicone Caulk with Finishing Tool 100% Waterproof Seal Shrink & Crack Proof Flexible Strong Adhesion for Automotive Bathroom Kitchen Windows 150ML/5Oz (Black)**SHIELDOM**$15.51**42 rev4mo ago](https://www.amazon.com/dp/B0GGGY7D5D) [**OB1 Universal Caulk Sealant & Adhesive Black 10.1oz | Professional Grade Premium All-in-One Advanced Hybrid 3-in1 | Water Resistant Internal & External | Shrink Crack UV & Fade Resistant | 1 Cartridge**OB1**$10.38**160 rev7mo ago](https://www.amazon.com/dp/B0G4SDZ4DL) [**Silicone Sealant 5oz No Caulking Gun Needed Flexible Adhesive Caulk 100% Waterproof UV Weather Resistant Crack Proof Sealant for Kitchen Bathroom Shower Window Auto Black**LUSTRIO**$14.75**65 rev9mo ago](https://www.amazon.com/dp/B0FS5M4LB2) [**Black Silicone Sealant & Caulk Tube with Finishing Tool Weatherproof Flexible Strong Adhesion for Bathroom Roof Window and Automotive Sealing**ADVANCEDSIL**$9.41**678 rev10mo ago](https://www.amazon.com/dp/B0FP4SV74B) [**Black Silicone Caulk - Easy Squeeze Caulking Tube Silicone Sealant for Wood Kitchen Bathroom Sink Windows - Multi Purpose & Waterproof - 1.7 fl. oz (Black)**professional soma fix**$10.35**812 rev1y ago](https://www.amazon.com/dp/B0F3WHGG7S)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**SHIELDOM Silicone Sealant Adhesive Silicone Caulk with Finishing Tool 100% Waterproof Seal Shrink & Crack Proof Flexible Strong Adhesion for Automotive Bathroom Kitchen Windows 150ML/5Oz (Black)**SHIELDOM**$15.51**4.6★**▲ 190%**](https://www.amazon.com/dp/B0GGGY7D5D) [**DAP Dynaflex Ultra Advanced Exterior Sealant Black 10.1 Oz (7079818220)**DAP**$8.68**4.7★**▲ 180%**](https://www.amazon.com/dp/B08JD2X9T9) [**DAP Dynaflex 230 Pro Elastomeric Sealant Black BK009 10.1 Oz (7079807107)**DAP**$7.88**5.0★**▲ 160%**](https://www.amazon.com/dp/B0DMTKVXXG) [**Black Silicone Caulk - Easy Squeeze Caulking Tube Silicone Sealant for Wood Kitchen Bathroom Sink Windows - Multi Purpose & Waterproof - 1.7 fl. oz (Black)**professional soma fix**$10.35**4.3★**▲ 156%**](https://www.amazon.com/dp/B0F3WHGG7S) [**OB1 Universal Caulk Sealant & Adhesive Black 10.1oz | Professional Grade Premium All-in-One Advanced Hybrid 3-in1 | Water Resistant Internal & External | Shrink Crack UV & Fade Resistant | 1 Cartridge**OB1**$10.38**4.2★**▲ 153%**](https://www.amazon.com/dp/B0G4SDZ4DL)
**~~View all trending →~~**
## **What buyers say about black caulk**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**21%
*“the quality was consistent and excellent”*
**Efficiency**8%
*“It works well for small gaps or connection points around the house”*
**Adhesion/Stickiness**8%
*“Strong adhesive”*
**Ease Of Use**7%
*“Easy to use”*
**Advertised Vs Actual Product**7%
*“Works as it should”*
**Value For Money**7%
*“reasonably priced”*
**Durability**5%
*“Very durable”*
**Ease Of Cleaning**5%
*“helps give it a cleaner”*
**Material Quality**4%
*“the material comes out smoothly”*
**Color**4%
*“Great color”*
### **What buyers complain about **
**Ease Of Use**16%
*“Not as easy to use”*
**Ease Of Cleaning**15%
*“Definitely not clean”*
**Quality-Overall**10%
*“Poor quality product”*
**Adhesion/Stickiness**7%
*“GREAT ADHESIVE, BAD CONTAINER”*
**Leak-Proof**6%
*“Tube leaks from bottom”*
**Color**5%
*“Don't choose the black color it doesn't look as good as your imagination ses it does”*
**Functionality-Overall**4%
*“ultimately did not function properly”*
**Hard Feel**4%
*“hard like a rock”*
**Thickness**3%
*“It was thick”*
**Value For Money**2%
*“not the most economical”*
### **Top return reasons **
**Color**21%
**Advertised Vs Actual Product**12%
**Compatibility-Overall**11%
**Functionality-Overall**8%
**Adhesion/Stickiness**8%
**Value For Money**7%
**Leak-Proof**7%
**Size-Overall**5%
**Defective Material/Parts**3%
**Strength**2%
## **Common questions**
- **Is black caulk profitable to sell on Amazon United States?**
- The niche generates $313K/yr across 17 tracked products. 4 of 4 products launched in the last 360 days are still selling. 90-day search growth is +9.8%. Flapen's verdict: Worth a look (54/100).
- **How competitive is the black caulk niche?**
- 12 brands and 90 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 79% of demand.
- **What do buyers complain about in black caulk?**
- Top complaints mined from reviews: Ease Of Use, Ease Of Cleaning, Quality-Overall. The return rate is 0.9%.
- **When does demand for black caulk peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the black caulk niche?**
- Listings span $5.79–$24.93; the average listing price is $12.19 (sweet spot $15–$100). The average incumbent carries 1,723 reviews — the moat a new listing must climb.
## **Related niches in Automotive**
- 72 [**brake bleeder kit**](https://flapen.com/research/us/automotive/brake-bleeder-kit)$2.2M/yr+8.2%**Launch it**- 72 [**gas can pump**](https://flapen.com/research/us/automotive/gas-can-pump)$1.7M/yr+20.1%**Launch it**- 72 [**dewalt hedge trimmer**](https://flapen.com/research/us/automotive/dewalt-hedge-trimmer)$1.6M/yr+158.2%**Launch it**- 72 [**iron eraser**](https://flapen.com/research/us/automotive/iron-eraser)$107K/yr>1,000%**Worth a look**- 72 [**marine fuel line**](https://flapen.com/research/us/automotive/marine-fuel-line)$198K/yr+104.3%**Worth a look**- 72 [**garden hose filter**](https://flapen.com/research/us/automotive/garden-hose-filter)$729K/yr+110.7%**Worth a look**[**All Automotive niches **](https://flapen.com/research/us/automotive)