Published: 13 March 2024

Bostik H505 Seal ’n’ Bond Crystal is a crystal-clear universal sealant and adhesive specifically developed for both interior and exterior use*. Its hybrid technology takes the best characteristics of PU for elasticity, and silicone for weathering to provide a versatile and effective product multi-functional sealant and adhesive.

Bostik H505 Seal ’n’ Bond Crystal can be used to seal and bond a wide variety of common building materials and all types of non-structural sealing applications where a minimum joint movement is expected. It cures under influence of humidity and is Phthalate-free, tin-free, and solvent free. The product is the ideal product for all trades, and suitable for application in construction, roofing and plumbing, basically anywhere where a clear hybrid adhesive or sealant is needed.


  • Bathroom installation
  • Joint sealing–Interior/exterior door and window, curtain wall, partition wall, dry-wall
  • Interior decorative applications – glass mosaic tile and ceramic
  • Non-structural general bonding
  • Non-structural general sealing



  • Multi-functional sealant and adhesive
  • Crystal clear appearance-High UV resistance
  • Phthalate-free, tin-free, and solvent free
  • Suitable for internal and external use*


*While Bostik H505 Seal ’n’ Bond Crystal has a high resistance against UV, Bostik recommends avoiding direct UV exposure when using this product outside.

*Bostik always recommends referring to the current Technical Data Sheet and Safety Data Sheet for use and limitations before application.