Polyurethane Sealant PU Seal Bostik

Model PU Seal Bostik
Tensile Strength MPa (kg/m2 ) (DIN 53504) • 1,0
Elasticity (%) • 500
Shore A Hardness ~ 40 – 45
Sag Flow 0 mm. (ISO7390)
Density, gr/m3 1,25 ± 0,05
Skin Formation Time (min) (at +23°C and 50% relative humidity) ~ 60
Curing Speed (mm/day) (at +23°C and 50% relative humidity) Appr. 3
Heat Resistance Between -40°C and +80°C
Running Temperature Between +5°C and +35°C
Colour White (RAL 9003)
Black (RAL 8022)
Grey ( RAL 7047)
Brown (RAL 8025)
Beige
Packaging In 280 ml composite cartridges
In 600 ml sausages
  • A ready-to-use, one component sealing material
  • Maintains its elasticity for years without any volume loss
  • No sagging may occur; resistant to aging and abrasion
  • Unaffected by temperature fluctuations (between -40°C and +80°C) and many chemical materials (diluted).

Areas of applications:

  •  Developed for use in constant gaps and moveable joints in construction sector
  • In the joints of concrete prefabricated construction materials
  • In the building materials and blocks, and for filling the joints that are left open as working and settlement allowance
  • In buildings, for filling the gaps between details and blocks constructed for decorative and constructive purposes
  • In connection areas of the wall and the floor in balconies and terraces
  • For filling the joints in the constructions like bridge piers, barrages, tunnels, concrete roads, etc.
  •  It should not be used in the materials that are high in plasticized material and not resistant to abrasion and cracking.

Bostik PU Seal is a polyurethane-based, one-component sealing material with excellent waterproofing and adhesion qualities. It is cured with the air humidity and can be used indoors and outdoors.

Preparation of the substrate:

  • The application surfaces should be strong, sound, stable, clean, dry and grease- and dust-free.
  • Both sides can be taped in order to obtain a smooth filling.
  • When necessary, the closed cartridges can be heated in a water vessel up to +10°C and +20°C.
  • In coated floor applications (for example, hydrophobic facades), a pre-control is needed for the compatibility.
  • In especially acrylic coating materials, some adhesion loss may occur due to the softening material.

Application:

  • The tip of the cartridge is cut and a plastic cap is fixed prior to use.
  • The tip of the cap is cut according to the width of the surface and fixed to the cartridge gun.
  • The cartridge is attached to the gun after the metal lid at the bottom is removed.
  • The joints should be filled at one time and without gaps during the application.
  • The package of the sausage is cut from one edge and fixed to the suitable gun.
  • The cap nut is screwed to the cylinder of the gun afterwards.
  • After the joints are filled with PU Seal, the surface is smoothened with a spatula or a wet sponge immediately.
  • The adhesive tape should be removed afterwards.
  • The opened packages should be consumed as quickly as possible.
  • The application is recommended at between -10°C and +40°C.
  • Do not apply outdoors in rainy weather.

Cleaning after the application: The contaminated areas and used tools should be cleaned with white spirit or alcohol within 10 minutes. It is cleaned only mechanically after cured.

Coverage: The amount of use varies according to the joint sizes.

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