

🖤 Seal it like a pro, weatherproof your world.
Permatex 81158 Black Silicone Adhesive Sealant is a professional-grade, sensor-safe RTV sealant in a 3 oz. tube. It offers waterproof, flexible bonding and sealing for glass, metal, plastics, and more, withstanding extreme temperatures from -75°F to 450°F. Ideal for indoor and outdoor use on door frames, electrical connections, seams, and vinyl tops, this versatile sealant ensures durable repairs and protection against weather and vibration.


| ASIN | B000AL6WLA |
| Best Sellers Rank | #530 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3 in Hardware Sealers #6 in Silicone Sealers |
| Department | unisex-adult |
| Item model number | 81158 |
| Manufacturer | Permatex |
| Product Dimensions | 20.32 x 10.16 x 5.08 cm; 90.72 g |
S**T
The product was good and as described
delivered on time
M**L
Do the job
Very good sealant
M**.
Good
Good
S**D
original and good quality
all good
D**T
Great product and fast delivery
Great product but just as importantly incredibly fast delivery and great service. Thank you
K**L
Neat & Effective: Perfect Silicone Solution
I used this black silicone to seal a customized USB port on my car dashboard, and it looks flawless! No odor, easy application, and it does the job perfectly. Couldn't be happier!
A**F
It was dry
The product was dry at the tip of the tube. I had to dig with a thin screwdriver in order to reach the soft part. it worked.. but the product should be too old so it will not get dried up.
N**S
Excellent product
Excellent product
J**E
I had a leaky sunroof (it's not draining properly and cleaning the channels repeatedly has done nothing) on my truck and have tried quite a few products already. But none of them could hold up to the Florida heat and weather, and would end up deteriorating and crumbling. I tried this product on the seal around the window and have had no leaking whatsoever. This stuff comes out like a thick black, tar-like caulking and is NOT easily cleaned from the hands or anything else you get it on, so be careful. You'll need gas or WD-40 (or something similar) to remove this stuff. Or just wear gloves, if you're messy like me. When it dries, though, it turns into a thick rubber-like seal that has elasticity and works extremely well; it is still holding up with no problems at all. Another bonus is that because it's a silicone seal, you can easily "peel" this stuff off if you ever want to remove it. Just pry up a part of the coating, and it'll all peel away in a big strip. And when I purchased this, it came as the product that is shown (with nozzle). There are also tubes of this product available, which I've used since and had no problems applying it.
A**A
Good silicone and good price. I always order this.
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.
Y**Y
Been using Permatex for several decades and this is my go to brand for most if not all automotive sealants and adhesive. This stuff works great for attaching a carbon fiber cover on my mobile antenna. It takes about an hour to lose it's tackiness and about 24 hours to be fully cured. Also keep in mind this black adhesive is messing especially when it gets on your fingers and hands. Just use WD-40 on a terry cloth to clean your hands and all of the black adhesive should comes off with little fuss. This stuff works great and it's been over 24 hours and there's no leaks even with the past two day it's been raining pretty heavy. The for money, it's great stuff to fix and repair or to fill in gaps and holes on many surfaces.
A**0
It worked really well. Good quality.
Trustpilot
2 weeks ago
1 month ago