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Bostik OB1 Sealant & Adhesive Anthracite 290ml
SKU:
BOS30617362
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Bostik OB1 Sealant & Adhesive Anthracite 290ml
Looking for a high-performance sealant that blends perfectly with modern anthracite finishes? The Bostik OB1 Sealant & Adhesive Anthracite 290ml is a professional-grade hybrid polymer adhesive designed for maximum strength, flexibility, and a clean, colour-matched finish across construction, roofing, and exterior applications.
Formulated with advanced hybrid technology, OB1 delivers exceptional bonding power on virtually any material, including aluminium, uPVC, concrete, wood, glass, stone and plastics—without the need for primers. It’s the ideal solution for anthracite window frames, doors, cladding, and roofing details, where both performance and appearance matter.
Unlike traditional silicones or mastics, this all-in-one sealant and adhesive replaces multiple products, working as a sealant, grab adhesive, and filler in one cartridge—saving time and reducing product costs on site.
Designed for real-world conditions, OB1 can be applied on wet surfaces and even underwater, allowing work to continue regardless of weather—perfect for UK roofing and external sealing jobs. It forms a permanently flexible, waterproof bond that resists UV, weathering, mould, and bacteria, ensuring long-term durability.
Its solvent-free formula guarantees no shrinkage, cracking, or brittleness, while maintaining a strong, elastic seal that absorbs movement and vibration—ideal for expansion joints and structural bonding.
Why Choose OB1 Anthracite?
- Perfect colour match for anthracite windows, doors & cladding
- Bonds virtually any material – no primer required
- Works in wet conditions & underwater
- Will not shrink, crack or go brittle
- Flexible, high-strength bond for movement joints
- UV, weather & chemical resistant
- Mould & bacteria resistant – ideal for exterior & sanitary use
- Paintable finish for seamless results
Ideal Applications
- Sealing anthracite window & door frames
- Roofing, flashing & gutter repairs
- Cladding, trims & façade bonding
- Bathrooms, kitchens & sanitary areas
- Expansion joints & structural sealing
Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
Specification
Brand
Bostik
Colour
Anthracite
Size
290ml
Tensile strength en12311 1
265n/cm2
Type
Adhesive/Sealant
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