Gorilla 100% Silicone Waterproof Caulk, All‑Purpose Sealant, Mold & Mildew Resistant, Flexible Seal, Clear, 10 oz Cartridge (Pack of 1)

Amazing glue. I love gorilla glue products and use a lot of it. It is the best glue out there. I know I tried all brands and this one by far is the best. Once you glue something it will never come off. So don't every plan on taking it off because it won't. So easy to apply. It seales evening out including water. I love the clear color. The smell is not that bad. Over dried there is no smell. I always use it to keeps the bugs out of my shed. It's a great barrier. Highly recommend.

I bought this Gorilla 100% Silicone Sealant for my son’s science project involving a hydrogen generator using electrolysis. When you’re dealing with gas and liquid connections, you need a seal that is truly 100% waterproof and airtight, and this Gorilla caulk delivered. The Project: We used this to seal every potential leak point on the generator, including all the hose connections and the penetrating bolts that go through the lid. Because the project involves electrolysis, we needed a sealant that could handle a bit of pressure and stay flexible. Performance: Easy Application: It flowed smoothly out of the cartridge and was easy to tool around the small bolts and hose fittings. Strong Bond: It adhered perfectly to both the plastic lid and the metal hardware. Once cured, it created a tough, rubbery seal that hasn't leaked a bit. Clarity: We used the "Clear" version, which is great because it keeps the project looking clean and allows us to see the connections clearly. Value: Even after sealing a dozen different points on the project, there is still a lot of silicone left in the tube. It’s great to have the rest on hand for any household or automotive sealing needs here in Big Bear. Pros: Versatile: Clearly works for more than just "standard" kitchen and bath jobs. Mold & Mildew Resistant: Good to know for long-term durability. Reliable Brand: Gorilla products rarely disappoint when it comes to strength. Cons: Odor: Like most 100% silicone, it has a strong vinegar-like smell while curing, so make sure you work in a well-ventilated area. Bottom Line: Whether you’re sealing a bathtub or building a science experiment, this is a top-tier sealant. It’s reliable, easy to use, and provides a professional-grade seal.

This caulk worked great on my tub! The consistency was just right not too runny and not too thick which made it really easy to apply. It smoothed out nicely and gave a clean, professional-looking finish. I also like that it’s mold and mildew resistant, which is perfect for bathroom use. Overall, very easy to work with and the results came out looking smooth and neat. Definitely a great product!

The Gorilla Waterproof Caulk & Seal Silicone Sealant is a truly exceptional product. When you need a reliable, professional-grade seal that you know will hold up against the elements, this is the cartridge to reach for. The application is smooth, the gray color is clean and consistent, and the resulting seal is absolutely watertight and durable. It lives up to the Gorilla reputation for being tough and long-lasting—this is a 100% waterproof solution that provides real peace of mind for window and door projects. The only reason this isn't a five-star perfect rating is purely a function of convenience versus cost. I needed this caulk quickly for a weekend project and ordered it online. I have no doubt that I could have saved a few dollars if I had been able to go to my local hardware store to purchase it, but the quick delivery and knowing I had a premium sealant ready to go made the extra cost acceptable. If you prioritize quality and need immediate results without waiting for a trip to the store, this caulk is absolutely worth the investment. It’s a top-tier sealant that performs exactly as advertised.

I picked up the Gorilla Waterproof Caulk & Seal in white (10oz cartridge) to redo the seals around my bathroom tub and a couple of kitchen windows, and it didn't disappoint. As a DIYer who's dealt with flimsy caulks before, this stuff is tough, easy to work with, and holds up well against moisture. Pros: Super Fast Water-Ready Time: It's ready for water exposure in just 30 minutes, which is a huge win for bathroom projects. I was able to use the shower the same day without worrying about leaks. No Shrinkage or Cracking: Unlike some cheaper sealants that crack after a few months, this one stays flexible and looks good long-term. It won't yellow over time either. Mold & Mildew Resistant: Perfect for humid areas like showers and kitchens – no mold buildup even after months of use. Excellent Adhesion: Sticks great to tile, glass, metal, and porcelain. I used it on window frames and tub edges, and it hasn't budged. Easy to Apply: Smooth consistency that tools nicely for clean lines. The 10oz cartridge gives plenty for multiple small jobs. Cons: Not Paintable: If you need to paint over it, this isn't the one (it's 100% silicone, so paint won't stick well). Strong Odor During Application: The vinegar-like smell is noticeable, so ventilate the area well. Cure Time: Full cure takes 24 hours, but the quick water-ready feature makes up for it. Overall, this is one of the best silicone sealants I've used – better than generic brands and on par with premium ones like GE or DAP. It gets consistent 4.5–4.8 star ratings across sites, and for the price (usually $10–$15), it's a solid choice for home repairs. Highly recommended for anyone tackling wet areas! I'd buy it again in a heartbeat.

Very nice product

Can save a lot of money

Nunca había usado la marca, pero francamente me quedé asombrado por su calidad. Se adhiere bien a las superficies, además de ser muy buen sellador. Muy recomendable.

Nice product

We used this to try to fix the lint trap on my dryer. The metal screen was rusting and tearing along the edge. No way to replace the screen or purchase a new lint trap. One bad of silicon asking the torn edge and seems to work perfectly fine.