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exhaust sealant

Skip it45/100

a small market ($83K/yr) — exhaust sealant doesn't clear our bar today.

Market/yr

$83K

Growth (1y)

+193.0%

Products

19

Brands

7

was 7 a year ago

Sellers

121

Price range

$4.25–$25.20

Returns

1.5%

Rating

4.3★

45/100

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Scored 45/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns
Market size
4
×0.30
Growth
76
×0.30
Competition
36
×0.20
Quality gap
55
×0.10
Returns
88
×0.10

Demand

Weekly Amazon search volume, last 49 weeks — +193.0% year over year.
2K915.5Spike '26Aug '25Sep '25Nov '25Jan '26Mar '26May '26

Competition

29%J-B Weld
  • J-B Weld29%
  • Permatex29%
  • Visbella19%
  • LOCBONDSO13%
  • MPD6%
  • Walker2%
  • Other (1 brands)2%

The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them. 7 brands and 121 sellers compete here.

Brands

7 flat

was 7 a year ago

Sellers

121

Top 5 brand share

97%

#ProductBrandPriceRatingReviewsClick shareTrend
9Permatex$9.173.8★44%rising
10J-B Weld$14.884.2★4,0593%falling
11Permatex$4.254.4★5,5712%falling
12Walker$12.544.4★1,0142%rising
15Holts$13.144.5★1,6052%falling

Product shelf

All 19 tracked products in this niche.

Reviews

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

What buyers love

Quality-Overall20%

“JB weld is a pretty good product”

Efficiency11%

“The repair itself worked well”

Value For Money11%

“Great value”

Advertised Vs Actual Product10%

“Works as advertised”

Leak-Proof8%

“not leaking air anymore”

Adhesion/Stickiness6%

“It stick”

Ease Of Use6%

“Easy to use”

Durability4%

“is very durable”

Maintenance And Repair4%

“Definitely something to keep around for serious repairs”

Heating4%

“Great for high heat repairs”

What buyers complain about

Durability17%

“falls apart within days”

Functionality-Overall11%

“Did not work”

Leak-Proof10%

“Took a spill”

Quality-Overall7%

“This product is of very poor quality”

Adhesion/Stickiness6%

“The tape that comes with it breaks while trying to unspool”

Value For Money5%

“It's a little pricey to use where you don't need maximum temperature silicone RTV gasket maker”

Strength4%

“Not strong enough for mufflers”

Material Quality3%

“Not much material in that little can”

Heating3%

“Didn't stay in place while running the engine exhaust to heat it up”

Maintenance And Repair2%

“Muffler repair”

Top return reasons

  • Functionality-Overall22%
  • Maintenance And Repair9%
  • Size-Overall8%
  • Advertised Vs Actual Product8%
  • Value For Money7%
  • Defective Material/Parts7%
  • Compatibility-Overall5%
  • Leak-Proof5%
  • Adhesion/Stickiness5%
  • Heating3%

Data scraped July 8, 2026 · Marketplace baseline: 4.4★ avg rating · $22.72 median price · 2.2% median returns across 15,813 tracked niches.