caulk cap
Skip itPrices mostly outside the sweet spot ($4.81–$15.40) — this niche doesn't clear our bar today.
Returns
Incredible0.4%return rate — above 5% kills the launch gate
Conversion
Incredible14.0%search→purchase rate — share of searches ending in a sale
Review moat
Okay1,678.83avg incumbent reviews — the moat a new listing must climb
Market size
Okay$159K$159K/yr · 151K searches
Growth
Okay+4.2%90-day search growth — must beat 0% to launch
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Brand share
Okay90%top-5 brand share — brands hold most of the demand
Competition
Bad75%top-5 click share — a locked-up shelf
Avg price
Bad$7.53avg listing price — sweet spot $15–$100
Price range
Bad$4.81–$15.40cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, caulk cap is a $159K/yr Amazon United States market (151K searches/yr). The top 5 brands hold 90% of demand. Verdict: Skip it — 41/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
caulk cap market data
- Units sold / yr
- 15K–20K
- avg 1,250–1,500/product
- Revenue / yr
- $113K–$151K
- units × avg price
- Conversion rate
- 14.0%
- Avg BSR
- #46
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 92%
- Out of stock
- 6.2%
- Avg brand age
- 47 months
- Avg seller age
- 171 days
Competition & brand share
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.Brands
9 falling
Sellers
14
Top-5 brand share
90%
Top 20: 100%
Top-5 click share
75%
Top 20: 100%
Open market
6%
- Caulk Cap48%
- Zonon17%
- KAEZDD11%
- yuntop8%
- GEMLORD5%
- Viemior4%
- Open — no brand owns it (3 brands, 6%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +4.2% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top caulk cap search terms
- caulk caps41K/yr
- caulk cap19K/yr
- caulk saver17K/yr
- caulk tube sealer caps14K/yr
- caulk tube caps12K/yr
- caulk caps for caulk tubes12K/yr
- caulk saver caps9K/yr
- caulking caps8K/yr
- caulking tube caps7K/yr
- caulking tube sealing caps6K/yr
Top caulk cap 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 12 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Caulk Cap CCY Caulk Saver Reusable Tube Sealer with Puncture Pin 4 Pack
Caulk Cap$7.114.8★422 rev
Caulk Cap CCY Caulk Saver Reusable Tube Sealer with Puncture Pin 6 Pack
Caulk Cap$9.954.7★4,903 rev
KAEZDD 40 Pcs Caulk Tube Sealer Caps Caulking Gun Tip Caps Caulking Tool Accessory Caulk Sealer Saver for Open Caulking Tube Sealing and Preserving with Storage Box for Easy Storage
KAEZDD$7.834.6★971 rev
Zonon 35 Pieces Caulk Cap Caulk Saver Finishing Tool Tube Covers Tube Caps for Sealing and Preserving Red
Zonon$6.964.6★3,317 rev
20 Pack Caulk Saver Caps - Seal and Preserve Open Caulking Tubes - Red
yuntop$4.814.5★319 rev
Newest
by launch date
40PCS Caulk Tube Latex Sealing Caps Caulking Gun Tip Caps - Universal Fit Caulk Tube Latex Sealing Caps for Sealing and Preserving Open Caulking Tube Tight & Leak-proof Sealing
Viemior$5.7257 rev
Caulk Cap CCY Caulk Saver Reusable Tube Sealer with Puncture Pin 4 Pack
Caulk Cap$7.11422 rev
Gisafai 5 Pcs Caulk Tube Caps Reusable Caulk Saver Tube Sealer Caps Finishing Tool for Sealing and Preserving Open Universal Prevent Drying (Classic Red)
Gisafai$6.09202 rev
Caulk Cap CCY Caulk Saver Reusable Tube Sealer with Puncture Pin 6 Pack
Caulk Cap$9.954,903 rev
Zonon 10 Pieces Caulk Cap Caulk Saver Finishing Tool Tube Covers Tube Caps for Sealing and Preserving Red
Zonon$4.863,317 rev
Trending
90-day click momentumZonon 10 Pieces Caulk Cap Caulk Saver Finishing Tool Tube Covers Tube Caps for Sealing and Preserving Red
Zonon$4.864.6★
40PCS Caulk Tube Latex Sealing Caps Caulking Gun Tip Caps - Universal Fit Caulk Tube Latex Sealing Caps for Sealing and Preserving Open Caulking Tube Tight & Leak-proof Sealing
Viemior$5.724.3★
Gisafai 5 Pcs Caulk Tube Caps Reusable Caulk Saver Tube Sealer Caps Finishing Tool for Sealing and Preserving Open Universal Prevent Drying (Classic Red)
Gisafai$6.094.6★
Caulk Cap CCY Caulk Saver Reusable Tube Sealer with Puncture Pin 6 Pack
Caulk Cap$9.954.7★
Caulk Cap CCY Caulk Saver Reusable Tube Sealer with Puncture Pin 4 Pack
Caulk Cap$7.114.8★
What buyers say about caulk cap
What buyers praise and complain about, mined from review topics.What buyers love
“Easy to put on”
“Save money”
“Gets the job done”
“Very well made”
“Work as advertised”
“Fits great”
“These have possibility for reuse”
“Work well when new, but”
“Theyre easy to clean”
“Keeps the Caulk moist”
What buyers complain about
“may break over at time”
“Didn't work for me”
“Did not fit”
“It was worse than not using anything”
“It would leave adhesive, foil, and would sometimes create a hole or crack when trying to remove it”
“should be much cheaper”
“Junk”
“Does not work as advertised”
“Tired of your caulk leaking, drying, wasting it”
“I wouldn't use them for long-term storage”
Top return reasons
Common questions
- Is caulk cap profitable to sell on Amazon United States?
- The niche generates $159K/yr across 12 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +4.2%. Flapen's verdict: Skip it (41/100).
- How competitive is the caulk cap niche?
- 9 brands and 14 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 90% of demand.
- What do buyers complain about in caulk cap?
- Top complaints mined from reviews: Durability, Functionality-Overall, Size-Overall. The return rate is 0.4%.
- When does demand for caulk cap peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the caulk cap niche?
- Listings span $4.81–$15.40; the average listing price is $7.53 (sweet spot $15–$100). The average incumbent carries 1,679 reviews — the moat a new listing must climb.