3M™ Polyurethane Sealant 540

3M Poly 540

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3M™ Polyurethane Sealant 540

3M™ Polyurethane Sealant 540 is an all-purpose, single-component, moisture-curing, gap-filling polyurethane that creates permanently elastic seals and bonds in a wide variety of service environments.

Typical Applications

3M™ Polyurethane Sealant 540 is a single component, moisture curing, polyurethane sealant used to bond a wide variety of materials, including plastics, fiberglass reinforced plastic (FRP), sheet molding compound (SMC), aluminum, steel, coated metal and wood.

Recommended Applications: Vertical and horizontal panel bonding and joint sealing, Aluminum curtain walls and storefronts, Transportation manufacturing (bus, rail, truck, trailer), Replacement of mechanical fasteners in many situations.

Features & Benefits

  • Multi-purpose bonding and long lasting seals
  • Permanently elastic to allow joint movement
  • 60-90 skin time; paintable, once skin forms
  • Good UV resistance
  • One component, moisture-curing sealant simplifies production
  • Bonds dissimilar materials for increased design flexibility
  • Gap filling capability