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🔧 Seal it, fix it, own it — the black silicone that never quits!
Permatex 81158 Black Silicone Adhesive Sealant is a versatile, high-performance RTV sealant designed for indoor and outdoor use. It bonds and seals a wide range of materials including glass, metal, plastics, and fabric, while offering waterproof, vibration, and grease resistance. With a temperature tolerance from -75°F to 450°F, it ensures durable repairs and protection, including safe application on electrical wiring. Perfect for professionals and DIYers seeking reliable, long-lasting sealing solutions.














| Asin | B000AL6WLA |
| Best Sellers Rank | 18,873 in DIY & Tools (See Top 100 in DIY & Tools) 372 in Sealers |
| Brand | Permatex |
| Colour | Black |
| Compatible Material | Glass |
| Country Of Origin | USA |
| Customer Reviews | 4.5 4.5 out of 5 stars (11,368) 4.5 out of 5 stars |
| Global Trade Identification Number | 00686226811585 |
| Included Components | Auto part, Automotive Accessories, Replacement and Performance parts |
| Item Dimensions | 20.3 x 10.2 x 5.1 centimetres |
| Item Form | Liquid |
| Item Type Name | Silicone Adhesive Sealant |
| Item Weight | 91 g |
| Manufacturer | Permatex |
| Manufacturer Part Number | 81158 |
| Material | Silicone |
| Model Number | 81158 |
| Number Of Items | 1 |
| Number Of Packs | 1 |
| Product Warranty | Manufacturer Warranty |
| Style Name | 3 oz. |
| Surface Recommendation | Fabric |
| Unit Count | 85.0 gram |
| Upc | 686226811585 |
| Water Resistance Level | Waterproof |
User
Solid sealant - saved my aftermarket brake lights🤷🏼
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.
User
Buy Again
great stuff, even worked well in the rain
User
Not now
I was pleased that it done the job
User
Worked great
I fixed my FitBit's screen with it. The screen fell out, but after the application, it became water resistant again, so it did the job well.
User
Good stuff
Used as a temporary repair to a small hole in a CV boot. Worked well.
User
Did the job
Did what it supposed to do.
User
Item
Very happy
User
Best product but fragile packaging
This is consistently the best product of this type to use. It isn’t cheap but this pack was crushed in transit. Whilst functional the tube needs completely reshaping before application.
User
Very good stuff!
Very solid drying silicone for most auto jobs.Works great on the china rails on Ford and Chevy small and big blocks.I have used it on oil pans and valve cover gaskets and have never had a issue. I buy it buy the case because the parts stores are much to high, I keep it in the house so it will last much longer due to temp being controlled.
User
防水シーリングとして使用
グリルマーカーを付けるためにグリルに穴あけをして裏側の配線ごと接着、防水シーリングとして使用。一晩放置で完全に固まって3ヶ月経ってもグラ付きは無いです。効果は文句無し。ただチューブ製なので作業しているとやがて手が真っ黒になって洗い落とすのが大変になるので手袋が必須です。
User
Nice product
Nice product
User
It's the best one out there.....
It worked really well. Good quality.
User
Mis chapas y cerraduras jamás habían trabajado tan bien... ni nuevas!
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!
Trustpilot
2 weeks ago
1 week ago