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BOSS® PU LM is a polyurethane adhesive sealant that is fast-curing, one-component based and moisture-curing. Once set, it turns into a flexible, durable, and resistant elastomeric seal and has very good adhesion to most industrial materials.


  • Excellent resistance to many chemicals.
  • Excellent resistance to UV radiation.
  • Permanently elastic after curing.
  • Very easy to apply.
  • Excellent adhesion on many materials.


  • All usual building joints with high movement.
  • Connection joints between windows, doorframes, and walls.
  • Expansion joints between many different construction materials.
  • Joints with large movement.
  • Sealing cracks in brickwork and concrete.


This product is available in white, concrete grey, and black.


Available in standard 600 ml sausages.

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