Gorilla Waterproof Caulk & Seal 100% Silicone Sealant* seals out water, air and moisture and is great for kitchen, bath, window, doors, auto, marine, plumbing, gutters and more! Ready for water exposure in just 30 minutes, this waterproof sealant is mold & mildew resistant.

I applied the Gorilla Glue Sealant and we didn't have any leaks after rain fell a day or two afterwards. The Sealant was simple to apply. The spray nozzle never clogged and I only used half the can. I will probably apply a second coat just to be safe.

Gorilla Sealant is the multi-use sealant that's ideal for all around the home – whether that's indoors or out. Available in White and Clear, it's fast-working and long lasting. This sealant is mould and mildew-resistant, flexible, and won't yellow, shrink or crack over time.

Not for use in underwater applications, aquariums, on brick, masonry, cementitious materials or on metals sensitive to corrosion including brass and galvanized metals. For general auto/marine applications only.

“Sealant” is the general and correct term for the chemical used to seal. “Silicone” is one type of sealant. There are also acrylic sealants, polyurethane sealants etc. Silicone sealants are the most prevalent type of sealant.

Generally speaking, silicone sealants are more versatile and flexible than polyurethane sealants and they work better in most environments. The inorganic composition means that silicone is resistant to UV rays, making it a better option than polyurethane sealant, which will eventually revert back to its natural form.

The approximate shelf life of Gorilla Waterproof Patch & Seal is up to 2 years, unopened from date of manufacture. Once opened there is no standard time, it will be dependent on storage conditions and age of the product, up to 9/12 months is a good guideline.

A sealant is generally lower in strength compared to an adhesive and is also used for a different purpose. Sealants are often used to fill gaps and resist relative movement of the surfaces to which they are applied. Even though adhesives are generally stronger, sealants provide the assembly with much more flexibility.

The verdict: It turns out there's a downside to silicone's occlusive abilities. Sure, they keep environmental aggressors out, but they also lock in some not-so-great substances. “For acne-prone patients, silicones can act as a 'barrier' and trap oil, dirt, and dead skin cells, making acne worse,” Mraz Robinson says.

Yes, some grades of silicone are strong enough to form a strong bond. In fact, some grades of silicone can reach strengths of 2Mpa. Unfortunately, due to the competitive nature of the sealant market and supply chain issues, most silicones are heavily diluted.

While Gorilla Glue is a popular adhesive, not all of their products are suitable for aquarium applications. One product that is often recommended for aquarium use is Gorilla Clear 100 Percent Silicone Sealant.

For the best aquarium safe silicone, turn to Loctite Clear Silicone Waterproof Sealant. This formula can be used in saltwater as well as freshwater aquariums.