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Würth

Würth Bond + Seal Fast Structural Adhesive

Würth Bond + Seal Fast Structural Adhesive

Key Features

  • Highly adhesive PU sealant - provides permanent elasticity with reliable long-term sealing.
  • Excellent adhesion - bonds effectively to plain, primed, and painted sheet metal.
  • Gap-bridging capability - compensates for tolerances and uneven surfaces.
  • Stable and easy to work - smooths effortlessly, with spatula or brush application possible.
  • Fast skin formation - surface becomes tack-free quickly, allowing for rapid overpainting (pre-tests required).
  • Approved for food processing areas - harmless once cured, ISEGA-certified.
  • Durable protection - prevents metal corrosion, remains elastic, and resists fuels, oils, and fats.
  • Virtually odourless and silicone-free - user-friendly and safe to use indoors.

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£22.99 GBP
£22.99 GBP
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Description

High-Performance Elastic Adhesive

Würth Bond + Seal Fast Structural Adhesive is a high-strength, permanently elastic polyurethane sealant designed for demanding applications in automotive, industrial, and construction environments. Its exceptional adhesion to plain, primed, or painted sheet metal ensures secure, long-lasting joints. The product is also formulated to compensate for tolerances and bridge gaps, making it ideal for seams, joints, and uneven connections.

Fast and Efficient Curing

With a short skin formation time (19–20 minutes under standard conditions), this adhesive becomes tack-free quickly, allowing rapid handling and painting. Once cured, it can be sanded, mechanically processed, and painted without the need for surface activation.

Application Versatility

Its high stability and brushable texture make application straightforward — whether by nozzle, spatula, or brush. The adhesive can even be structured for a clean finish with minimal effort. Thanks to its permanent elasticity, it’s perfectly suited for sealing overlapping seams, visible joints, spot-welded seams, sheet-metal connection joints, and folded seams both indoors and outdoors.

Safe and Certified for Sensitive Areas

Würth Bond + Seal carries an ISEGA food-grade certificate, meaning it is harmless to health in its cured state. This makes it suitable for sealing applications in food-processing environments. It is silicone-free, non-corrosive, and virtually odourless, ensuring safer use across a wide range of industries.

Durability and Resistance

Once cured, the adhesive offers excellent temperature resistance from -40°C up to +90°C (short-term up to 120°C), and withstands exposure to fuels, mineral oils, animal fats, and vegetable oils. Its 600% elongation at break and strong tear resistance ensure flexibility without compromising strength.

Notice:

  • Not suitable for glass groove sealing where UV back reflection occurs.
  • Direct sunlight may cause slight surface yellowing.
  • Avoid contact with alkyd-resin paint systems.

Technical Information

Specifications

Contents: 300 ml

Container: Cartridge

Chemical Basis: Single-component polyurethane

Colour: White

Skin Formation Time (min): 19–20 min

Density (23°C, 50% RH): 1.2 g/cm³

Full Curing Speed (23°C, 50% RH): 3 mm/day (moisture curing)

Processing Temperature Range: +5°C to +35°C

Temperature Resistance (long-term): -40°C to +90°C

Temperature Resistance (short-term): Up to 120°C (8 hrs)

Tensile Strength: ≥1.8 N/mm² (DIN 53504)

Tear Resistance: ≥6 N/mm (DIN 53515)

Elongation at Break: 600% (DIN 53504)

Glass Transition Temperature: -45°C (DIN 53445)

Max. Volume Change: -6% (DIN 52451)

Short-Term Resistance: Fuels, mineral oils, animal fats, vegetable fats, vegetable oils

Shelf Life: 12 months (stored between +10°C and +25°C)

Silicone-Free: Yes

Documents

Application Instructions

  1. Ensure all surfaces are clean, dry, and free of grease.
  2. Avoid applying to surfaces with high surface moisture.
  3. Cut off the cartridge thread cap and attach the nozzle.
  4. Trim nozzle to the required bead width.
  5. Apply using a suitable application gun.
  6. Recommended minimum adhesive layer thickness is 3mm for optimal thick-coat bonding performance.
  7. Smooth or structure using a spatula or brush before skin formation begins.
  8. Once skin forms (approx. 20 min), the product can be overpainted. Always perform preliminary compatibility tests.

Usage Notes:

  • Avoid contact with alkyd resin paints.
  • Excessive moisture, overly thick beads, or trapped cavities can cause bubble formation.
  • Direct UV exposure may lead to disoclouration (cosmetic only).