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Bostik OB1 Sealant & Adhesive Grey 290ml
Bostik OB1 Sealant & Adhesive Grey 290ml
Bostik OB1 Sealant & Adhesive Grey 290ml
Bostik

Bostik OB1 Sealant & Adhesive Grey 290ml

SKU: BOS30617357
£6.71
incl. VAT
£6.71
Availability: Out Of Stock
Experience next-level bonding and sealing with our advanced hybrid polymer technology. This high-performance adhesive is a versatile alternative to traditional mastics, PU adhesives, silicones, acrylics, and butyl rubber sealants. Formulated without solvents, it won’t crack, shrink, or release harmful fumes, ensuring long-lasting durability. Its strong, flexible bond can be applied even on wet or damp surfaces, and once cured, it can be painted or moulded for a seamless finish. Engineered for maximum strength, this adhesive sealant also provides resistance to fungal and bacterial growth, making it ideal for both indoor and outdoor applications. Perfect for construction, woodworking, and general repairs where a reliable, multi-purpose adhesive is essential.
NEXT DAY DELIVERY AVAILABLE

Order within the countdown for next day delivery.

UK Mainland Delivery. Excludes Bank Holidays.
Subtotal: £6.71
Bostik OB1 Sealant & Adhesive Grey 290ml

Bostik OB1 Sealant & Adhesive Grey 290ml

£6.71
Bostik OB1 Sealant & Adhesive Grey 290ml
Bostik OB1 Sealant & Adhesive Grey 290ml
Bostik OB1 Sealant & Adhesive Grey 290ml

Bostik OB1 Sealant & Adhesive Grey 290ml

£6.71

Product information

Everything you need to know

Product description

Bostik OB1 Sealant & Adhesive Grey 290ml

Need a sealant that actually sticks, seals, and lasts—no matter the conditions? The Bostik OB1 Sealant & Adhesive Grey 290ml is a next-generation hybrid polymer adhesive built for professionals who demand maximum strength, flexibility, and reliability on every job.

Unlike standard silicones or mastics, OB1 delivers extreme bonding power across almost any material, including concrete, metal, wood, glass, PVC, GRP and more—making it one of the most versatile sealant adhesives on the market. Whether you're working on roofing, construction, bathrooms or general repairs, this is your go-to all-in-one solution.

What sets OB1 apart is its ability to bond even on wet surfaces or underwater, saving time on site and eliminating delays caused by weather. Its solvent-free, odourless formula ensures a clean application while preventing shrinkage, cracking or failure over time.

Designed for durability, OB1 forms a permanently flexible, waterproof seal that resists weathering, UV exposure, and temperature extremes from -40°C to +120°C—ideal for demanding UK conditions.

Why OB1 Outperforms Standard Sealants

  • Bonds virtually any material – no primer required
  • Works in wet or dry conditions (even underwater)
  • Will not shrink, crack or become brittle over time
  • Flexible & high-strength bond for movement joints
  • Waterproof, weatherproof & UV resistant
  • Mould & bacteria resistant – ideal for kitchens & bathrooms
  • Paintable for a clean, professional finish

Perfect For

  • Roofing repairs, flashing & gutter sealing
  • Bathrooms, kitchens & sanitary sealing
  • Bonding panels, trims, mirrors & fixtures
  • Construction joints & expansion areas
  • Automotive, marine & industrial applications

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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