J-B Weld 31310 All-Purpose RTV Silicone Sealant and Adhesive - 3 oz. - Clear

Used this to seal up an aquarium and it worked super well. It hardened fully in about 48 hours, but I probably could've scraped off the excess after 24. It's super clear and blends into the background. The applicator didn't work very well, so I put it in a Ziploc and piped it on like frosting, which worked much better. Aquarium is watertight now.

I bought this product because I needed a waterproof sealant that would bond well to a rubber surface. I wear waders for surf fishing and recently discovered I had a leak where the pants meet the boot and didn't want to have to order a new pair because of a small leak. I came to Amazon and looked at a few other products that basically advertise the same things but this one had the best reviews so I ordered it. I used a small amount with a paint brush on my waders and it covered the leak and bonded to the rubber material well. I am very impressed with its performance! I dries clear and dries pretty quickly. It does have a funny chemical odor, but that's to be expected when deal with silicone or epoxy.

I recently used this silicone sealant for some minor household repairs, and it turned out to be a fantastic choice! 🛠️ The J-B Weld All-Purpose RTV Silicone Sealant & Adhesive is perfect for fixing leaks, sealing gaps, and even some automotive jobs. 🚗 🔧 The application process is straightforward, and the product works really well on a variety of surfaces, including glass, metal, and plastic. The sealant dries clear and provides a strong, waterproof bond that’s resistant to the elements. 🌧️ I especially appreciate that it doesn't shrink or crack, ensuring long-lasting durability. 💪 🧰 Whether you're fixing a leaky pipe, sealing around a window, or working on your car, this sealant provides reliable performance. It's also safe for use around sensors and is resistant to mold and mildew, which adds to its versatility. 👌 I highly recommend this product to anyone in need of a versatile, durable sealant. It’s especially useful for DIY projects, household repairs, or automotive fixes. 🏡

Just as good as JB weld only it works on waterproofing it applied easily and dried quickly would buy again

This J-B silicone sealant is another quality product from J-B. None of their products I have used for various home repairs have ever failed me, and this silicon sealant is no exception. Uses are basically unlimited, and it is always a good idea to have a tube of this product on hand. Waterproof and weatherproof. As I use up the tube, I roll up the bottom to prevent what some reviewers have noted as bottom tube blow out.

Great stuff for repairing things that need to be water- and weatherproof. Beware the bottom of the tube blowing out on you. Before I used it, I duct-taped the bottom of the tube to prevent a blowout and the mess that comes with it. So far so good.

Its RTV. Does what RTV does. ...And it is clear.

2nd use and it exploded out the back and got all over me, had to throw it out and immediately do some laundry.

Excellent product

رائع 👍🏽

This product is a great product for sealing leaks, bonding materials, or weatherproofing. I used it on a cracked window frame, and it held up perfectly against rain and wind. The clarity is excellent, and it doesn’t shrink after drying. Works on glass, metal, and plastic very handy to have around

As a silicone sealant it does an adequate job, and the tube style makes convenient for home repair use. I was able to patch up a small pipe leak with it, among some other repairs. It isn't particularly easy to spread smoothly, however, and tends to clump up. Curing time is reasonable. The included application spout is not very useful. It takes a bit of effort to get it working, and then it ends up full of solid silicone that needs to be removed before it can be used again. Very inconvenient and wasteful of product. The stuff has has a very strong acrid, vinegary smell to it, until it cures. You should probably be careful to keep adequate ventilation when using it. Wear disposable gloves, too, if you can, although that can make application even more awkward. I didn't notice when I ordered it that it had to come all the way from the UK, so delivery time was long. I would probably have searched harder for a more local choice if I had.

At first i used it with the nozzle but its hard to squish it out so I had to cut it from the second circle to make the hole bigger which worked, please do not force it through the smallest hole since Ive seen some comments complaining that it bursted open and made a mess. I would recommend you remove the nozzle when you are almost done and clean it properly by passing tissue through it, using some of that product leftover. While this might be messy and a bit wasteful it will prevent both the tube and the nozzle from drying up since the nozzle doesnt have a seal. Now i use it without without nozzle and it still works nice for areas that dont require precise application or tight areas and its an amazing adhesive, it says it dries in 1h but id recommend leaving it at least half a day, do the work at night and leave it overnight maybe. Ive used it to glue some shelfs in the kitchen and put spices and sauces which can be quite heavy, left milk and other heavy items to test the durability and its been 3 weeks holding all that weight, also used the glue to seal corners in the bathroom and its completely waterproof once dry. The next time u open the tube there will be a dried up crust on the top, if u squeeze a bit it should come out, i didnt throw it away and actually placed it back once im done using the product and this actually works as a second seal that prevents another dry crust. Overall amazing product.