Is sealant spray profitable to sell on Amazon United States?

The niche generates $168K/yr across 18 tracked products. 90-day search growth is +33.2%. Flapen's verdict: Worth a look (50/100).

How competitive is the sealant spray niche?

8 brands and 100 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 93% of demand.

What do buyers complain about in sealant spray?

Top complaints mined from reviews: Functionality-Overall, Leak-Proof, Spray/Flow. The return rate is 0.0%.

When does demand for sealant spray peak?

Demand peaks in Feb–Mar–May; the busiest month runs 5.3× the quietest.

What does it cost to enter the sealant spray niche?

Listings span $5.27–$32.42; the average listing price is $12.68 (sweet spot $15–$100). The average incumbent carries 16,941 reviews — the moat a new listing must climb.

sealant spray

Worth a look

Shows low returns (0.0%), but brand-locked demand (top 5 brands take 93% of clicks) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Great7.0%

search→purchase rate — share of searches ending in a sale

Price range

Good$5.27–$32.42

cheapest to priciest tracked listing — scored on the share inside $15–$100

Growth

Good+33.2%

90-day search growth — must beat 0% to launch

Avg price

Good$12.68

avg listing price — sweet spot $15–$100

Quality gap

Good4.5★

avg incumbent rating — lower means beatable quality

Market size

Okay$168K

$168K/yr · 190K searches

Competition

Okay65%

top-5 click share — leaders hold, buyers still browse

Brand share

Bad93%

top-5 brand share — brand-locked demand

Review moat

Bad16,941.06

avg incumbent reviews — the moat a new listing must climb

According to Flapen's Amazon United States niche tracking, sealant spray is a $168K/yr Amazon United States market (190K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Feb–Mar–May. Verdict: Worth a look — 50/100.

Data updated Jul 27, 2026 · scored weekly · How we score niches

sealant spray market data

Units sold / yr: 13K–15K; avg 500–750/product
Revenue / yr: $159K–$190K; units × avg price
Conversion rate: 7.0%
Avg BSR: #44
Page quality: 0%
Prime: 100%
Sponsored: 44%
Out of stock: 7.4%
Avg brand age: 70 months
Avg seller age: 151 days

Competition & brand share

The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.

Brands

8 falling

Sellers

100

Top-5 brand share

93%

Top 20: 100%

Top-5 click share

65%

Top 20: 100%

Open market

Flex Seal29%
GORILLA24%
Mod Podge18%
Krylon11%
Rust-Oleum11%
WEICON3%
Open — no brand owns it (2 brands, 4%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +33.2% search growth over the last 90 days.

Peak months: Feb, Mar, May · busiest ÷ quietest = 5.3×

Open Trend

Top sealant spray search terms

sealant spray34K/yr +38.8%3.8% conv.
spray sealant waterproof26K/yr +43.0%6.1% conv.
spray sealant19K/yr +37.4%3.4% conv.
sealer spray16K/yr +30.1%4.3% conv.
clear sealant spray14K/yr +66.7%7.5% conv.
waterproof sealant spray14K/yr +29.6%3.7% conv.
water sealant spray11K/yr +24.6%4.8% conv.
clear spray sealant12K/yr +2.9%7.1% conv.
spray sealer9K/yr +15.5%5.3% conv.
spray sealer waterproof7K/yr +30.9%5.2% conv.

All search terms

Top sealant spray 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 18 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Gorilla Waterproofing Spray Clear Flexible Rubberized Sealant Coating Paintable UV Resistant Seals Water Air Moisture 14 oz (Pack of 1) for Roofs Gutters Skylights RVs Windows & More

GORILLA$14.184.3★13,292 rev

Mod Podge Spray Acrylic Sealer that is Specifically Formulated to Seal Craft Projects Dries Crystal Clear is Non-Yellowing No-Run and Quick Drying 12 ounce Gloss

Mod Podge$10.084.7★12,654 rev

Flex Seal 14 oz Clear Stop Leaks Instantly Transparent Waterproof Rubber Spray On Sealant Coating Perfect for Gutters Wood RV Campers Roof Repair Skylights Windows and More

Flex Seal$14.344.4★39,391 rev

Flex Seal MAX 17 oz 2-Pack Clear Stop Leaks Instantly Waterproof Rubber Spray On Sealant Coating Perfect for Gutters Wood RV Campers Roof Repair Skylights Windows and More

Flex Seal$32.424.4★39,391 rev

Rust-Oleum Painters Touch 2X Ultra Cover Spray Paint Semi-Gloss Clear

Rust-Oleum$6.274.7★8,602 rev

Newest

by launch date

Flex Caulk Waterproof & Weatherproof Hybrid Polymer Sealant Strong Paintable Indoor Outdoor Bath Shower Sink Window Baseboards Door RV Roof Wood Auto & Marine Clear 6.6 oz 1-Pack

Flex Seal$19.511,943 rev

2y ago

Flex Seal MAX 17 oz 2-Pack Clear Stop Leaks Instantly Waterproof Rubber Spray On Sealant Coating Perfect for Gutters Wood RV Campers Roof Repair Skylights Windows and More

Flex Seal$32.4239,391 rev

3y ago

Gorilla Waterproof Patch & Seal Rubberized Sealant Spray Black 16 Ounce (Pack of 1) - Seals Out Water Air and Moisture

GORILLA$13.7913,292 rev

5y ago

Gorilla Waterproofing Spray Clear Flexible Rubberized Sealant Coating Paintable UV Resistant Seals Water Air Moisture 14 oz (Pack of 1) for Roofs Gutters Skylights RVs Windows & More

GORILLA$14.1813,292 rev

5y ago

WEICON Allround Sealing Spray 400ml / 13.5oz | Waterproof Sealant for Indoor & Outdoor Use | Ideal for Boat Car Motorcycle Caravan | Industrial Grade

WEICON$13.872,464 rev

6y ago

What buyers say about sealant spray

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall17%

“consistent in quality”

Advertised Vs Actual Product11%

“As advertised”

Efficiency11%

“Works effectively and quickly”

Ease Of Use8%

“The spray was easy to use”

Value For Money6%

“Saves money”

Paint Quality5%

“Works great as a sealer for painted rocks”

Leak-Proof5%

“It is indeed a good sealer”

Spray/Flow5%

“no problems spraying”

Brightness/Shine/Glow5%

“has a nice shine to it as well”

Moist/Dry2%

“IT GOES ON EVENLY AND SMOOTH AND DRIES QUICKLY”

What buyers complain about

Functionality-Overall14%

“Didn't work properly”

Leak-Proof13%

“It leaked”

Spray/Flow9%

“Stopped up instantly and won't spray”

Quality-Overall6%

“Cheap and waste of money”

Adhesion/Stickiness5%

“Bad adhesive”

Smell5%

“Note there is an odor”

Color4%

“Turned yellow in 10 months”

Value For Money4%

“Overpriced and slow”

Thickness3%

“Needed a thicker product”

Ease Of Use3%

“not very easy to use”

Common questions

Is sealant spray profitable to sell on Amazon United States?: The niche generates $168K/yr across 18 tracked products. 90-day search growth is +33.2%. Flapen's verdict: Worth a look (50/100).
How competitive is the sealant spray niche?: 8 brands and 100 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 93% of demand.
What do buyers complain about in sealant spray?: Top complaints mined from reviews: Functionality-Overall, Leak-Proof, Spray/Flow. The return rate is 0.0%.
When does demand for sealant spray peak?: Demand peaks in Feb–Mar–May; the busiest month runs 5.3× the quietest.
What does it cost to enter the sealant spray niche?: Listings span $5.27–$32.42; the average listing price is $12.68 (sweet spot $15–$100). The average incumbent carries 16,941 reviews — the moat a new listing must climb.