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J-B Weld 31316 Blue RTV Silicone Gasket Maker and Sealant, 3. Fluid_Ounces

4.7 out of 5 stars 3,206 ratings

Currently unavailable.

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  • RTV SILICONE SEALANT & ADHESIVE: Is a general purpose RTV (Room Temperature Vulcanized) Silicone, designed for sealing and bonding uneven surfaces.
  • WHAT THE PROS USE: Mechanics, repair pros, and any avid Dyer knows our products bond strong to a variety of surfaces in even the toughest environments; and they have always been made in the USA.
  • EASY TO USE: Upon curing, the silicone forms a tough, waterproof seal on most surfaces. It will not shrink or crack, resists weathering and is great for many automotive accessories and household uses.
  • VERSATILE & DEPENDABLE: Ideal for bonding, sealing, weather stripping, moldings, interior trim, windows, windshields, door frames, lens housings and more.
  • DO IT YOURSELF: Big or small, you can DIY it with J-B. Our heavy duty adhesives repair & restore it right the first time. JB Weld delivers the legendary performance of the World's Strongest Bond.

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Product description

J-B Weld Silicone Sealant & Adhesive is a general purpose RTV (Room Temperature Vulcanized) Silicone, designed for sealing and bonding uneven surfaces. Upon curing, which occurs when the product is exposed to the moisture in air, the silicone forms a tough, waterproof seal on most surfaces. It will not shrink or crack, resists weathering and is great for many automotive accessories and household applications.



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Most helpful customer reviews on Amazon.com

Amazon.com: 4.4 out of 5 stars 423 reviews
Brenna M. Olson
5.0 out of 5 stars Satisfied! Good for rednecking vehicle repairs.
3 June 2018 - Published on Amazon.com
Verified Purchase
54 people found this helpful
E. Heinrich
1.0 out of 5 stars First squeeze of tube pushed silicone out the wrong end
29 July 2019 - Published on Amazon.com
Verified Purchase
26 people found this helpful
Steve Day
5.0 out of 5 stars Perfect for leak-proof gaskets or electrical isolation on vehicles and general repairs.
16 April 2019 - Published on Amazon.com
Verified Purchase
18 people found this helpful
Chicago John
5.0 out of 5 stars Good value and quality
21 January 2017 - Published on Amazon.com
Verified Purchase
26 people found this helpful
Needs More BLK
1.0 out of 5 stars Worked but cracked off on hottest areas of smoker firebox.
23 August 2017 - Published on Amazon.com
Verified Purchase
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1.0 out of 5 stars Worked but cracked off on hottest areas of smoker firebox.
Reviewed in the United States on 23 August 2017
it worked well on SOME of the areas on my smoker that don't get that hot, but some of the hot areas of my firebox on my smoker cracked and broke and flaked right off, even after a good cleaning/brushing of debris and a two day cure.

I will buy some more an apply it again to confirm it's use. It did plug a lot of the needed areas though.

My infared themomoter only ready at 550 degrees and the packaging stated it can hold up to 650 degrees.
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26 people found this helpful