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  • Multi-purpose bonding and long lasting seals
  • Permanently elastic to allow joint movement
  • Creates flexible seals on expansion joints
  • Skin time in 90-150 minutes; paintable once skin forms
  • 3M Polyurethane Construction Sealant 525 is a single-component, moisture-curing, gap-filling elastomeric sealant that creates permanently elastic seals and bonds well to concrete. Skin time in 90-150 minutes.
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