Standard stuff. Works well. I used it in the bathroom, kitchen, to repair a cracked fish tank and all worked. Good stuff



BOSTIK Marine Silicone Clear - 280ml
124 in stock
Fast, tracked courier across South Africa
Unused, in original packaging
BOSTIK Marine Silicone Clear - 280ml is a one-part, acetoxy-curing silicone that provides a permanent, flexible, watertight seal for building fish tanks and aquariums and heavy-duty marine work. The large 280ml cartridge suits bigger tanks and larger sealing runs.
Key Features
- Aquarium grade formulated for building fish tanks and aquariums.
- Watertight seal that remains flexible and durable over time.
- Wide temperature flexibility staying flexible from -40°C to 100°C.
- UV and weather resistant against weathering, ageing and water.
- Chemical resistant and unaffected by alcohols, soap and detergents.
- Strong adhesive on non-porous surfaces needing an elastic bond.
- Large 280ml cartridge for building larger tanks in one go.
Specifications
- Size: 280ml cartridge
- Type: One-part acetoxy-curing silicone sealant
- Temperature flexibility: -40°C to 100°C
- Colour: Clear
- SKU: A10067
- Barcode: 6001364102403
Typical Uses & Applications
- Building large aquariums bonding big glass panels along long seams.
- Heavy-duty marine work where a bigger cartridge saves reloading.
- Large tank repairs resealing extended seams in one continuous run.
- Pond and water-feature glass sealing sizeable clear joints.
- General waterproofing around the home on non-porous surfaces.
- Weatherproofing larger exterior gaps on DIY projects.
- Extended gap-filling bonds needing an elastic clear adhesive.
Usage Tip
Load the cartridge into a caulking gun and lay a single continuous bead along each seam for maximum strength, tooling it before it skins. Let it cure fully before filling any tank. Does not contain a fungicide.
The large-cartridge clear marine silicone for tackling bigger tank builds and marine seals.
About BOSTIK
Bostik is a globally trusted adhesives and sealants brand, delivering high-quality bonding and sealing solutions relied on by trade professionals and DIYers across South Africa.
What's in the box:
1 x BOSTIK Marine Silicone Sealant Clear (280ml)
| Weight | 0.34 kg |
| SKU | A10067 |
Customer Reviews
Bought this? Share your experience to help other shoppers.
The task I intended to use the marine silicone for is as an underwater pool light sealant. Unfortunately less than half way through the tube it became blocked, root cause showed the remaining silicone was solid and not liquified. I checked the manufacturing date (11/2025) so confirming the product is not out of date, have to assume it was not kept in a location conducive to keeping the tube fresh. Disappointed, but I managed to complete my task with the initial silicone. Note: the silicone needs to dry/set for 7 days so plan ahead.
works great I built a 37 liter fish tank with it and there were no leaks and it dry in about 5 hours
worked great on my cracked fish tank
Very Satisfied with this Product
seals my Aquarium nicely
no Leaks
Does the job perfectly. I had a contractor out here 3 times to fix the leak and every time it still leaked. I decided to buy this and do it myself and the leak is gone! Easy to use and works!
Good buy. Seals well. Recommended
This will fix any fish tank with no problem, I even built a fish tank with this.
Great silicone to use for aquariums, reptile enclosures and sealing. I use it on wood, glass and even cement with no issues. Always my go to silicone!
Worth every penny works amazing this gives you peace of mind knowing water won't seep into kitchen wood.




