J-B Weld Ultimate Copper RTV Silicone

I recently had the opportunity to use the J-B Weld 31319 Black RTV Silicone Sealant and Adhesive, and I must say, I am thoroughly impressed with its performance and versatility. As someone who frequently tackles DIY projects and repairs around the house, finding a reliable sealant and adhesive is essential, and this product certainly delivers. One of the standout features of the J-B Weld 31319 is its exceptional durability. Once applied, it forms a strong and resilient bond that withstands a wide range of environmental conditions, including temperature fluctuations, moisture, and vibration. Whether I'm sealing gaps in plumbing fixtures or bonding materials together, I can trust that this silicone sealant will hold up over time. Another aspect of this product that I appreciate is its ease of use. The nozzle allows for precise application, minimizing waste and mess during the sealing process. The consistency of the sealant is ideal—not too runny, yet smooth enough to spread evenly and fill in cracks and gaps effectively. Cleanup is also a breeze, as the excess sealant can be easily wiped away with a cloth or sponge. The black color of the sealant is a nice touch, especially for applications where aesthetics are important. It blends seamlessly with dark surfaces, providing a clean and professional finish that enhances the overall appearance of the project. Furthermore, the versatility of this product makes it a valuable addition to any toolkit. Whether I'm sealing leaks in automotive components, repairing household appliances, or even crafting custom projects, the J-B Weld 31319 proves to be a reliable solution time and time again. In conclusion, I can wholeheartedly recommend the J-B Weld 31319 Black RTV Silicone Sealant and Adhesive to anyone in need of a dependable sealant and adhesive for a variety of applications. Its durability, ease of use, and versatility make it a standout product in its category, and I will certainly continue to rely on it for all my sealing and bonding needs in the future.

The ULTIMATE black is the best working and curing product I have ever used from any RTV manufacturer. It smooths on like soft butter with no clumping, excess cleans off easily, and it cures into a true rubber-like material. It makes great gaskets and sealer. The only other RTV product I buy now is the extreme high-temperature red or copper. J-B Weld Ultimate Black is not formulated for high-temperature use on vehicle exhaust headers and connections.

This stuff works better than epoxy.

I used this on this for a valve cover gasket and it worked alright. The tube basically blew out the back end when squeezing so be careful. But other than that it was fast easy and dried quick, which is what I needed. It’s as easy to remove as most siliocine caulkin. And it stuck pretty good. You get a decent amount per tube. More than you could ever need for 1-3 jobs. And the color was what I needed, but if you’re using this like you should, the color should matter as it’ll be hidden for the most part. Over all, it’s good but I which the actual tube it’s held in was More durable, no reason it should bust open just from squeezing it. But the size is good, you get a lot of it.

Works well, it's good quality silicone so should last not a gigantic container so keep it in mind if you have a large area to apply. Also if you try to squeeze the tube to strongly you'll pop the tube seams. Super water resistant and good consistency.

The stuff works. I used it to glue black rubber soles back onto a pair of clogs and it’s holding solidly!

This is glue, strong stuff.

The sealant & adhesive works great. However, as usual, after the first or second use, you'll find the cap is cracked and the top half-inch of the tube is dried out. The only way to salvage what's left is to poke a hole on the bottom of the tube and enjoy your last use. This J-B Weld Black Silicone isn't the only tube this happens with. It's more than a coincidence when this happens with almost all gooey stuff that comes in tubes. I believe the caps are designed to break so the contents will dry up and we'll have to buy more stuff. The best thing to do is after you use this stuff for the first time, is to cap it right. Perhaps put a small piece of a plastic bag over the opening before screwing the cap back on. Maybe steal the cap from your toothpaste tube and see if it fits. Good luck.

Es el mejor producto

Cumple las expectativas

It's nice no smell too much and bonds very fast

I was trying to find a Cheap way to seal the back of my window on my car as the seal around my back window was non-existent and my dealership refuses to fix it even though I bought it this way. Without it costing me an arm and a leg, I am sure this stuff did the trick.. Their was no leakage my number one concern was the chipping and it turning into rust. This 100% did the trick! It has rained and pour since I put this on and its still intact. Love this stuff!

Me sirvió para pegar en mi BMW y lo soporto ya que se maneja temperaturas altas, 100% recomendable