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PU21 is a one part, fast moisture curing sealant/adhesive. After curing the sealant has a shore A hardness of about 40 and excellent tear resistance which allow general purpose uses in the main industrial or building applications.


This product is formulated to provide rapid skin formation and fast cure when the polymerisations occurs at room temperature. BPU21 also provides good primerless adhesion on all common substrates such as glass, aluminium, metal and concrete.


  • Pack Size : 310ml
  • Colour : Grey
  • Base : Polyurethane
  • Viscosity : Thixotropic paste
  • Service Temperature Range : –30°C – +90°C


Bondloc BPU21 Polyurethane Sealant TDS