🔧 Seal the deal with OB1 — where strength meets versatility!
OB1 Black Multi-Surface Construction Sealant & Adhesive leverages 20+ years of hybrid polymer innovation to deliver a durable, weatherproof, and food-safe bonding solution. Its unique formula withstands extreme temperatures from -40°C to +120°C and can be applied underwater, making it ideal for both industrial and residential projects. Odourless and eco-friendly, OB1 ensures professional-grade performance without compromising air quality or safety.
| Manufacturer | Siroflex Lte |
| Part number | 044875 |
| Item Weight | 500 g |
| Product Dimensions | 5 x 5 x 23 cm; 500 g |
| Item model number | OB1SCS290BL |
| Size | Cartridge |
| Colour | Black |
| Style | Industrial |
| Material | Hybrid Polymer |
| Power source type | ac |
| Item Package Quantity | 1 |
| Included components | OB1 SEAL & ADH BLACK 290ML |
| Batteries included? | No |
| Batteries Required? | No |
J**O
Good all-rounder!
We use this for just about everything! Sticks like all hell when it's dry, and great for sealing small leaks. Great for indoor and outdoor use!
R**X
Very strong and weather resistant
Excellent stuff. Used for waterproofing. Easy to use. Can paint over it when cured. Best to wear gloves when using it.
J**E
Really good but there is another option
This product is pretty good, I really liek that it is not solvent based. I do find it hard to work with because it is acrylic it sticks to absolutely everything in sight you need to be careful.there is a product on the market almost the same as this for £4 a tube.
J**R
Great Sealant
Great quality product! Great value from amazon. Really effective and seals like a glove.
S**.
Great product!
The media could not be loaded. Perfect for sealing my pond, great all round
J**.
Better than silicone
Found this about 10 years ago. Sealed round the bath which has an overhead shower and is used about 6 times a day (two footballing sons!) it just started crumbling last week so I had to skim the surface and re-cover to tidy up. I reckon if I’d used ordinary bathroom silicone I’d have had to re-do two or three times by now. Long lasting, cleaner to work with than silicone and also works well as an adhesive (I’ve used it for repairing tiles, sticking on skirting boards and all sorts.) just good stuff.
U**.
fantastic sealant and adhesive, easy to work
great to apply and work, good bonding, low or almost no odour, my first choice for most applications
K**X
Sticky and took dark for oak
As an adhesive this is great and sticks amazingly well, as a sealant it's very hard to work with as very sticky. FYI colour doesn't go well with a IKEA oak coloured worktop. Value for money I would say good
Trustpilot
1 day ago
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