exhaust sealant
Skip it45/100a 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★
Skip it
Scored 45/100 across market size, growth, competition, quality gap, and returns.
Demand
Weekly Amazon search volume, last 49 weeks — +193.0% year over year.Competition
- 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%
Product shelf
All 19 tracked products in this niche.

Permatex 81878 Ultra Copper Maximum Temperature RTV Silicone Gasket Maker 3 oz. Tube
Permatex
$8.134.8★3,365 reviews

J-B Weld MufflerSeal Muffler Cement Plastic Tube 12 oz. Model Number: 37912
J-B Weld
$12.754.4★1,654 reviews

Visbella Auto Vehicle Exhaust System Sealant Non-Slumping Professional Repair Crack Adhesive Super Glue Sealer for Car Mufflers Tailpipes Catalytic Converters (Tube Gram 75)
Visbella
$7.864.2★809 reviews

LOCBONDSO Muffler Repair Kit Heat Resistant Up to 2012F Exhaust Sealant Professional Seal for Exhaust Systems Mufflers Tailpipes and Catalytic Converters 2.6 oz
LOCBONDSO
$7.654.1★401 reviews

MPD Muffler Cement Putty 16 oz | Seals Exhaust Leaks Cracks & Holes | Heat Resistant Up to 2000F | Easy Application for Automotive Repairs (Pack of 1)
MPD
$16.184.4★116 reviews

J-B Weld 37901 ExtremeHeat High Temperature Resistant Metallic Paste - 3 oz
J-B Weld
$8.084.2★12,200 reviews

Visbella Auto Vehicle Exhaust System Sealant Non-Slumping Professional Repair Crack Adhesive Super Glue Sealer for Car Mufflers Tailpipes Catalytic Converters (Tube Gram 150)
Visbella
$9.924.2★809 reviews

J-B Weld MufflerSeal Muffler Cement Plastic Tube 6 oz. (37906)
J-B Weld
$7.804.4★1,654 reviews
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“JB weld is a pretty good product”
“The repair itself worked well”
“Great value”
“Works as advertised”
“not leaking air anymore”
“It stick”
“Easy to use”
“is very durable”
“Definitely something to keep around for serious repairs”
“Great for high heat repairs”
What buyers complain about
“falls apart within days”
“Did not work”
“Took a spill”
“This product is of very poor quality”
“The tape that comes with it breaks while trying to unspool”
“It's a little pricey to use where you don't need maximum temperature silicone RTV gasket maker”
“Not strong enough for mufflers”
“Not much material in that little can”
“Didn't stay in place while running the engine exhaust to heat it up”
“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%






