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Permatex 81158 Black Silicone Adhesive Sealant, 3 oz. Tube

by Permatex See the Amazon Page for this brand
4.4 out of 5 stars  See all reviews (45 customer reviews)
6 answered questions

List Price: $11.18
Price: $5.23 & FREE Shipping on orders over $35. Details
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Size: 3 Ounce Tube
  • General-purpose, black RTV indoor/outdoor sealant bonds, repairs, seals, mends and secures glass, metal, plastics, fabric, vinyl, weather stripping and vinyl tops
  • Protects and repairs electrical wiring
  • Works effectively on both horizontal and vertical surfaces
  • Waterproof and flexible with a temperature range of -75 degrees Fahrenheit to 450 degrees Fahrenheit
  • Oil, water, weather, vibration and grease resistant

Frequently Bought Together

Permatex 81158 Black Silicone Adhesive Sealant, 3 oz. Tube + Permatex 80050 Clear RTV Silicone Adhesive Sealant, 3 oz.
Buy the selected items together


Product Details

Size: 3 Ounce Tube
View Technical Data Sheet [PDF]
  • Product Dimensions: 1.2 x 3.8 x 8 inches ; 3.2 ounces
  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B000AL6WLA
  • Item model number: 81158
  • Average Customer Review: 4.4 out of 5 stars  See all reviews (45 customer reviews)
  • Amazon Best Sellers Rank: #669 in Automotive (See Top 100 in Automotive)
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Product Description

Size: 3 Ounce Tube

Permatex Black Silicone Adhesive Sealant is a general-purpose, black RTV indoor/outdoor sealant. Effectively bonds, repairs, seals, mends and secures glass, metal, plastics, fabric, vinyl, weather stripping and vinyl tops. Also protects and repairs electrical wiring and may be applied to horizontal or vertical surfaces. Waterproof and flexible with a temperature range of -75 degrees Fahrenheit to 450 degrees Fahrenheit, this sealant is oil, water, weather, vibration and grease resistant. Suggested applications include windshields, door frames, electrical connections, seams and roofs, vinyl tops, and weather stripping.


Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews
19 of 19 people found the following review helpful
5.0 out of 5 stars Versatile repair helper November 12, 2012
Size Name:3 Ounce Tube
I have found RTV silicone sealant to be an indispensable handy helper with many uses around the house, car, boat, and workshop.

Silicone is a very good adhesive for the right applications, and can be used as a substitute for grommets, rubber cushions, weatherstripping, anti-skid feet, etc. As an adhesive, I have found nothing better than silicone for attaching items to glass. For instance, as a member of a volunteer fire department, I fastened some LED strobe lights to the back window of my truck with it, and they have been out in the weather for 2 years with no inclination of falling off (although you can easily slice through it with a razor blade when you want it to come off). I also have used it inside the truck to glue small electronic devices to the dashboard, console, windows, etc. where I wanted to avoid drilling holes, and it is much more versatile than double-sided tape, except that you have to wait for it to set. For projects like this, it is good to use masking tape to keep it off any surfaces you don't want to get it on, and also to tape the object in place to keep it still until this product dries.

I have used RTV silicone to repair leaks and cracks in rubber hoses. I've used it to patch holes in speaker cones and to insulate electrical plugs. I have even used it to fix cracked roof shingles and leaky gutters. I always keep a tube of white and one of clear silicone on hand too, because whatever color it is coming out of the tube is the color it will be forever...it cannot be painted!

RTV silicone has a shelf life, and I always try to use up any open tube within six months to avoid problems. If you have a tube and don't know how old it is or if it's still usable, test it by squeezing out a dab onto a piece of paper.
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7 of 8 people found the following review helpful
5.0 out of 5 stars The Only Choice! September 25, 2011
Size Name:3 Ounce Tube|Verified Purchase
If you need to seal it, stick it, or dampen it, Permatex Silicone Adhesive is the only choice! You can use it as weather stripping around your windows, or like a rubber stopper to keep a door from rattling. I have even used it on upholstery to keep it from fraying were fabric was missing.
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8 of 10 people found the following review helpful
2.0 out of 5 stars Avoid black go with the clear one July 8, 2013
By E-H-K
Size Name:3 Ounce Tube|Verified Purchase
Good product line but I would recommend you use the clear version "Permatex 80050" by the same company and not the black one unless you really need it for some aesthetic reason.

I got one of each and the black one is much more runny and difficult to work with and seems to take longer to dry/cure. It also stinks a lot more and will stain black anything it touches - tools, hands, clothes, work area, etc.

They are pretty much the same price, definitely go with the clear one to make your project and cleanup much easier.
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3 of 3 people found the following review helpful
4.0 out of 5 stars very effective, but messy cleanup December 7, 2012
Size Name:3 Ounce Tube|Verified Purchase
This silicone did both jobs I needed done [help adhere replacement side mirror; repair damaged antenna mount] on my Sable, but it was fluid enough to get all over my hands when I had to move it into place around the antenna and in the gap between the car body and the cracked mount. I'd taped around the mount location so that wasn't too messy, but I had to use lots of paper towels before I went in the house and washed up.
It is primarily for sealing gaskets, but adapted well for these jobs. I still have over half the tube, but if it hardens before I need it again, not much is lost.
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3 of 3 people found the following review helpful
5.0 out of 5 stars Great for convertible tops October 5, 2012
Size Name:3 Ounce Tube|Verified Purchase
I purchased this to repair a small section of my convertible top that was starting to tear. So far, it is working great and blends in nicely. I've also found other uses for this adhesive and it has come through with flying colors. Every do-it-yourself-er should keep a tube close by.
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2 of 2 people found the following review helpful
4.0 out of 5 stars Blace Silicone Adhesive June 17, 2013
Size Name:3 Ounce Tube|Verified Purchase
This stuff sticks and works well. The only downside is that its hard to remove from you hands. Best to use clear, thin gloves when applying.
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2 of 2 people found the following review helpful
5.0 out of 5 stars Good for electrical repairs December 24, 2012
Size Name:3 Ounce Tube|Verified Purchase
This is what you need to patch up electrical repairs on automobiles or any low voltage application. Waterproof and easy to apply.
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1 of 1 people found the following review helpful
5.0 out of 5 stars Worked as intended to April 29, 2013
By Max
Size Name:3 Ounce Tube|Verified Purchase
I used this to fix a tear in my soft top on my car. Works perfectly and stays put. Perfect for tears...
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Most Recent Customer Reviews
5.0 out of 5 stars Five Stars
All good
Published 3 days ago by ardeshir dabir-babakan
4.0 out of 5 stars Good stuff
This is good, used to seal antenna on my car.
Published 3 days ago by Techie1212
5.0 out of 5 stars I was able to quickly and easily seal the bottom edges of the mount...
This product did exactly what I wanted it to do. The rubber seal on the bottom of a magnetic mount for a mobile Ham communications antenna was worn after using since 2002 and had... Read more
Published 1 month ago by Marc J
3.0 out of 5 stars JUST WHAT I WANTED
The product work to my exact needs. It came on time and was wrapped well. It last for a long time and i will not need anymore for sometime.
Published 2 months ago by JAMES FINORE
5.0 out of 5 stars Good to have around
Many uses automotive and home. Can use for sealant/gasket on autos. Also use to hold the pads on the grates on stove top. Read more
Published 2 months ago by Walt D
4.0 out of 5 stars Good but difficult to work with
Pretty good product but the packaging makes it difficult to work with as the tube is prone to splitting/cracking. Can be messy for fine applications. Read more
Published 3 months ago by Wayne
5.0 out of 5 stars As always, Permatex has the best gasket/silicone
Didn't even need this but good to have around so ordered it and threw it in on a big order.
Published 3 months ago by Trevor
4.0 out of 5 stars Good performance but can be messy.
Works very well and as expected as a sealant. But cleaning up after using can be challenging as the material is very tenacious.
Published 3 months ago by Craig
5.0 out of 5 stars Great product
Black RTV is difficult to find! This item is rarely available in stores! Great for patching things that are black, especially where you wish to stop small light leaks.
Published 5 months ago by JerryInDFW
2.0 out of 5 stars Use it all or Lose it!
Product works well enough, but you better plan on using the entire tube. That's because the applicator tip can not be re-used. Read more
Published 5 months ago by Joe
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