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Urethane Adhesives

Your solution to repairing concrete and providing flexible bonds.

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Strong bonds that bend but don’t break

  • Two-part urethane structural adhesives are different from one-part moisture-curing urethane sealants. Urethane structural adhesives are two-part formulations that react when mixed and do not require moisture to cure. They are relatively flexible when cured and therefore tend to have excellent impact and vibration resistance. Urethane structural adhesives bond well to most plastics, wood, concrete, rubber and carbon fiber, but they tend to have reduced resistance to solvents and high temperatures. The combination of flexibility and the ability to form strong bonds to a variety of substrates makes two-component urethane structural adhesives an excellent choice for joining dissimilar metals and materials.


Key benefits of PUR adhesives

  • Urethane adhesives are ideal for carbon fiber and composite bonding.

    Material Bonding

    Urethanes adhere to a wide variety of substrates, including wood, concrete, rubber and many plastics

  • Urethane adhesives can repair concrete surfaces and cracks without leaving visible bond lines.

    Improved Aesthetics

    Urethanes bond different substrates without the bond line being visible through the substrate

  • Mitigate noise, vibration, and harshness (NVH) with urethane adhesives.

    Noise, Vibration & Harshness

    Flexibility allows urethanes to absorb shocks and thermal expansion differences between dissimilar materials


Featured Urethane Adhesive Products

Explore Urethane Adhesive Products
  • 3M™ Scotch-Weld™ Urethane Adhesive 3549

    A two-part urethane adhesive that delivers extremely tough, flexible bonds.

    • Designed for vertical and other applications that require no slumping or sagging of the adhesive bead
    • Low-temperature flexibility
    • Flexible adhesive that is capable of bonding dissimilar substrates, including composites, SMC, FRP, ceramic, and many plastics

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  • 3M™ Scotch-Weld™ Concrete Repair DP600

    A quick-curing, two-component polyurethane adhesive that is designed to repair cracks, spalls and breaks in concrete, masonry and stone.

    • Hardens in as little as five minutes
    • Low viscosity and self-levels for horizontal installations
    • Cures to any depth without cracking
    • Allows for sanding refinement and smooth finishes
    • Dispenses with a regular caulk gun or Duo-Pak cartridge system

    View product details


See 3M™ Scotch-Weld™ Urethane Adhesives in Action


Featured Resources


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