

🖤 Seal it like a pro — don’t let leaks or cracks cramp your style!
Permatex 81158 Black Silicone Adhesive Sealant is a sensor-safe, professional-grade RTV sealant designed for indoor and outdoor use. It offers waterproof, flexible, and weather-resistant bonding and sealing across a wide temperature range (-75°F to 450°F). Ideal for repairing and securing glass, metal, plastics, fabric, vinyl, and electrical wiring, it cures in 24 hours to a durable, long-lasting finish that withstands vibration, water, and heat.














| ASIN | B000AL6WLA |
| Best Sellers Rank | #255 in Automotive ( See Top 100 in Automotive ) #1 in Body Repair & Restoration Adhesives |
| Brand | Permatex |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (10,989) |
| Date First Available | April 1, 2004 |
| Exterior | Machined |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00686226811585 |
| Is Discontinued By Manufacturer | No |
| Item Form | Tube |
| Item Package Quantity | 1 |
| Item Volume | 3 Fluid Ounces |
| Item Weight | 3.84 ounces |
| Item model number | 81158 |
| Manufacturer | Permatex |
| Manufacturer Part Number | 81158 |
| Material | Silicone |
| Model | ITW Permatex - 81158 |
| Number of Pieces | 1 |
| OEM Part Number | PMT81158 |
| Package Information | Tube |
| Product Dimensions | 8 x 4 x 2 inches |
| Special Feature | sensor-safe |
| Special Features | sensor-safe |
| Specific Uses For Product | Seals, bonds, repairs, mends and secures glass, metal, plastics, fabric, vinyl, weather stripping and vinyl tops, Protects and repairs electrical wiring |
| UPC | 686226811585 |
| Unit Count | 3.0 Ounce |
| Viscosity | Medium |
| Viscosity Level | Medium |
| Water Resistance Level | Waterproof |
S**A
Impressive Sealant That Withstands Heavy Rain
I wanted to wait a while after applying this to my car before leaving a review. It’s been a few months now, and I originally noticed water seeping in through the rear window because of wear and tear on the rubber seal. I was skeptical at first since this product was so inexpensive, but I’m genuinely impressed with how well it sealed the gap. I live in an area where it rains about 80% of the year, and this product has held up perfectly. Two big thumbs up from me!
C**N
It’s versatile, and worth the money!
I picked up this Permatex black silicone adhesive sealant for a few small repairs, and it ended up being one of the most versatile products I’ve used. It applies smoothly, cures to a strong and flexible hold, and bonds well to everything from plastic and metal to rubber and glass. I used it on a weather-exposed automotive trim piece and a small interior repair, and it sealed perfectly with no peeling or cracking. Once cured, it’s tough, completely waterproof, and holds up great against heat and vibration. I really appreciate that it’s suitable for both interior and exterior use, which makes it a reliable go-to for all kinds of DIY fixes. Overall, a dependable, long-lasting adhesive that’s absolutely worth keeping in a toolbox.
F**Y
Great sealent
Really nice product, this is a reorder since I have used the first tube. It will last if you seal the tube tightly. Great for repairing shoe's with black soles.
G**S
Good
Bought this specifically for my door seal on my car. The seal stickiness wore off and instead of getting a whole new seal and whatnot, I decided to get this and it works perfectly. Good product the only reason I give it 4 stars is because the nozzle is a 1 and done. Its not like super glue sticks where you can cover the nozzle and use it again. Should've added like 3 or 4 nozzles just for future uses because not everyone is using this entire tube in 1 go. Either than that I am satisfied with my purchase
M**M
Reliable, Versatile, and Practically Indestructible
This sealant is one of those products that earns its place in the toolbox and never leaves. It seals, sticks, and stays put, whether it’s fixing a car gasket, patching a leak, or repairing something around the house that other adhesives just shrug at. The consistency is smooth, it cures evenly, and once it sets, it’s practically part of the material itself. What really stands out is how many uses this little tube quietly handles without fuss or failure. It’s the kind of product that doesn’t need gimmicks or fancy packaging. It just performs flawlessly every single time. After a few uses, you start to realize it’s the sort of thing you’ll keep reordering long before you run out. If you value dependability over hype, this sealant is it. It’s the unsung hero of small repairs. It's strong, tidy, and endlessly useful. Heat resistant and great value for money.
G**A
Great gasket maker and sealant
Does a great job with basically all applications I’ve used it for
W**R
Good glue!
Worked perfectly on my auto trim.
D**S
Don't use it on your shoes!
This stuff is NOT the same as Shoe Goo. For a while now I've been almost resoling some back soled shoes (they're no longer made) with Shoe Goo as I have over pronation and the back side of the heel wears out fast. I often would rebuild the heel with SG, then during the first walk it would sort of sand itself back to smooth and blend right in. Foolishly, I tried doing the same thing with this stuff and it behaved very differently. Where SG is more like liquid rubber, this stuff is more just like black caulking. So it rebuild my heel but rather then sort of sanding down like a normal shoe sole (or SG) it instead just sort of tears away and rips. It still sticks to your shoe (so far anyway) but it will forever look messy. I learned my lesson here, as is often true, you get what you pay for. Back to Shoe Goo I go. I'm sure this stuff is great for other things, but I would strongly not recommend it for shoes. FWIW, I don't think they do either but I saw a reviewer or two here who did. There were some parts of the shoe where the sole was pulling away and I tried to sort of glue those spots like I do with SG and it sadly failed there too.
M**L
I used this to seal around a set of aftermarket rear brake lights after my original ones let water in and ended up getting damaged. Applied a clean bead around the edges and let it cure for the full 24 hours. The day after, we had heavy rain and so far it's holding up great - no leaks and the seal feels strong. It used just over half the tube for both lights, so if you're planning a bigger job or sealing more than one area, I'd definitely recommend picking up two tubes just in case. Will update if anything changes, but so far this stuff is doing exactly what I needed.
A**0
It worked really well. Good quality.
E**Z
No es exageración. Un apretón (de acuerdo a las instrucciones y si no puedes ver algún video tutorial por si dudas de cómo aplicarlo, yo dudé) y comienza la magia. Es un polvito negro muy fino por lo que guantes o una limpieza de manos a conciencia es recomendable. Las chapas y cerraduras con problemas de que la llave no entra a la primera, se debe aplicar fuerza o rechina simplemente comienzan a desaparecer al paso de la primer aplicación. Yo juegué un poco con las llaves (meter, sacar, meter, sacar, girar) un par de veces para que el polvo comience a esparcirse. EXCELENTE AHORA! Con el paso de los días (creo porque se va distribuyendo mejor) su funcionamiento se vuelve mejor. Sigan las instrucciones y contraindicaciones ya que parece un artículo fácil pero requiere de su atención. Volveré a comprar sin dudarlo. Lo combiné con un lubricante de litio que también compré en Amazon y la verdad hasta gusto me da abrir mis puertas!
C**O
Tutto ok
R**N
Good product, it's what I expected.
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