BOSS® PU25 LM

Polyurethane Sealant

BOSS® PU25 LM is a low modulus, one component, class A polyurethane sealant. When cured it will form a tough, flexible seal capable of cyclic expansion and compression movement of 50%(± 25%) of the original joint width. BOSS® PU25 LMis virtually unaffected by normal weathering conditions such as rain, sunlight, snow, sleet, ultra-violet radiation, ozone, spheric contamination and pollution. Its excellent weatherability enables it to retain its original properties after years of exposure.


  • Resistant to ageing and weathering exposure, non-corrosive.

  • Can be over-painted can be sanded.

  • Bonds well to a wide variety of substrates(Metal, plastics, Glass & FRP).




  • TechnicalData Sheet

       Typical Applications