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Bostik OB1 Sealant & Adhesive Silver 290ml
Bostik

Bostik OB1 Sealant & Adhesive Silver 290ml

SKU: BOS30617355
£6.71
incl. VAT
£6.71
Availability: Out Of Stock
The Bostik OB1® Hybrid Sealant & Adhesive is a premium, next-generation bonding solution designed for professional and DIY use. Its advanced hybrid polymer formula makes it a superior alternative to traditional mastics, wood glues, PU adhesives, silicones, acrylics, and butyl rubber sealants. Unlike solvent-based adhesives, OB1® will never crack, shrink, or degrade over time, delivering long-lasting performance in demanding conditions. It can be applied directly onto wet or damp surfaces and is easily paintable and mouldable once cured, offering complete flexibility for a flawless finish. Engineered for exceptional durability, this sealant adhesive provides very high bond strength while resisting fungal and bacterial growth, making it ideal for both indoor and outdoor projects. Whether you’re sealing, bonding, or repairing, OB1® delivers reliable results every time.
NEXT DAY DELIVERY AVAILABLE

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Subtotal: £6.71
Bostik OB1 Sealant & Adhesive Silver 290ml

Bostik OB1 Sealant & Adhesive Silver 290ml

£6.71
Bostik OB1 Sealant & Adhesive Silver 290ml

Bostik OB1 Sealant & Adhesive Silver 290ml

£6.71

Product information

Everything you need to know

Product description

Bostik OB1 Sealant & Adhesive Silver 290ml

Looking for a high-performance sealant that delivers strength, flexibility, and a clean metallic finish? The Bostik OB1 Sealant & Adhesive Silver 290ml is a professional-grade hybrid polymer adhesive designed for maximum bonding power and long-lasting durability across construction, roofing, and metal applications.

Formulated with advanced hybrid technology, OB1 provides exceptional adhesion to virtually any material, including aluminium, steel, lead, glass, wood, concrete, plastics and more—without the need for primers. It’s the perfect choice for metal trims, flashing, cladding, and modern construction details where both performance and appearance matter.

Unlike traditional silicones or mastics, OB1 works as a sealant, adhesive, filler, and grab adhesive in one, reducing the need for multiple products on site. Its solvent-free formula ensures zero shrinkage or cracking, while maintaining a strong, permanently flexible bond that absorbs movement and vibration over time.

Designed for real-world UK conditions, OB1 can be applied on wet surfaces and even underwater, making it ideal for roofing repairs, external sealing, and emergency fixes. It forms a fully waterproof, weatherproof seal with excellent resistance to UV, chemicals, and temperature extremes from -40°C to +120°C.

Additionally, OB1 is odourless and resistant to mould, fungal, and bacterial growth, making it suitable for both interior and exterior use where hygiene and durability are essential.

Why Choose OB1 Silver?

  • Perfect for metal, aluminium & flashing applications
  • 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
  • Resistant to mould, fungi & bacteria
  • Paintable for a clean, professional finish

Ideal Applications

  • Lead flashing, metal trims & cladding
  • Roofing repairs, gutters & external sealing
  • Bonding panels, fixtures & construction materials
  • Kitchens, bathrooms & sanitary sealing
  • Automotive, marine & industrial use

Helpful information

Delivery, refunds and returns

Delivery Delivery information

Accepting Your Delivery

Before accepting and signing for your delivery, make sure to check for any damage. If there is damage or fault with your package, please send an email to support@siliconedirect.co.uk

Free Delivery

We offer free next day (working day) delivery for all eligible orders over £50. For eligibility, orders must be placed before 14:00 from Monday to Friday. If you order on a Saturday, the order will be shipped on Monday for next day delivery.

Delivery Charges

  • UK Orders Under £49.99 - £5.99
  • UK Orders Over £50.00 - FREE
  • Isle of Man & Jersey - £19.99

Delivery Instructions

Please let us know at the time of your order if you would like to give any specific delivery requests by entering the relevant information into the note section of your order. Whilst we can’t guarantee couriers will take notice of all requirements, we’ll do our best to make sure they take note.

View full delivery information
Refunds & returns Refunds and returns

Returning a Product

You must tell us if you are looking to return a product via email, mentioning your order number.

Delivery costs will not be refunded.

Returns must be made within 30 days of the delivery.

Return Address

Unit 2 Hillgate, Wilbury Way, Hitchin, SG4 0RY

Products That Cannot Be Returned or Refunded

Special order items may not be returned or refunded.

Any products that have been attempted to or have been installed cannot be returned or refunded either.

Damaged and Faulty Goods

The refund policy does not affect your statutory rights to care for products that have been delivered in error or damaged. We do everything within our power to ensure all products get delivered to you in perfect condition, but human error can occur.

View full refunds and returns policy

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