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🔧 Seal it, bond it, own it — the ultimate fix for every surface!
OB1 Anthracite Multi-Surface Construction Sealant & Adhesive is a 290ml hybrid polymer paste designed for durable, waterproof bonding and sealing across diverse materials. It withstands extreme temperatures (-40°C to +120°C), is safe for underwater use, eco-friendly, odourless, and compatible with most paints. Trusted for over 20 years, it’s the go-to 2-in-1 solution for professional and DIY construction needs.









| ASIN | B08K24NG7Z |
| Best Sellers Rank | 263 in DIY & Tools ( See Top 100 in DIY & Tools ) 16 in Sealers |
| Brand | OB1 |
| Colour | Anthracite |
| Compatible Material | Aluminium, Fibreglass, Glass, Plastic |
| Container Type | Tube |
| Country Of Origin | Netherlands |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,244) |
| Global Trade Identification Number | 05032822004473 |
| Included Components | 290ml Cartridge with Nozzle |
| Item Form | Paste |
| Item Package Quantity | 1 |
| Item Type Name | Adhesive and sealant |
| Item Volume | 290 Millilitres |
| Item Weight | 515 Grams |
| Manufacturer | Siroflex Lte |
| Manufacturer Part Number | B1SCS290A |
| Material | Hybrid Polymer |
| Model Number | B1SCS290A |
| Number of Pieces | 1 |
| Other Special Features of the Product | Hybrid Polymer Technology |
| Specific Uses For Product | Construction, Repair |
| Tensile Strength | 265 Newtons Per Square Millimeter (N/mm2) |
| Unit Count | 515.0 gram |
| Viscosity Level | Low |
| Water Resistance Level | Waterproof |
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