Mulco Butyl Rubber Based Sealant 300 ml - Available in a variety of colors

SKU: MUL124650:EA In Stock
Regular price $4.61

Butyl is a butyl rubber, architectural, one-component sealing compound for general exterior use, especially for sealing outdoor joints around door and window frames, and sidings. Dries by solvent evaporation.


  • Mildew-resistant
  • Excellent adhesion to glass and ceramic
  • For interior and exterior use
  • Rubber-based sealant
  • Stays flexible at -30° C
  • Economical
  • Available size: 300 mL
  • Available colours:
    • White (010)
    • Aluminum (650)
    • Black (950)

CAUTION: Not for use on surfaces such as asphalt or tar products, or insulation panels (polystyrene, etc.).

Intended Uses:

  • Used to seal outdoor joints between two perpendicular surfaces subject to thermal movements. For sealing joints around door and window frames and sidings.
  • Good adhesion on many surfaces such as natural, painted or anodised aluminum, painted or stained wood, concrete or masonry.
    • Do not use in contact with surfaces such as asphalt or tar products and insulation panels (polystyrene, etc.) which can be damaged by solvents
    • Does not withstand immersion (tank) or abrasion (foot traffic)
    • Not recommended for window glazing applications or hidden joints, which require a non-skinning, non-hardening sealant.


  • No mixing or primer required.
  • No staining of surrounding surfaces.
  • Can be applied on vertical, horizontal or overhanging surfaces without subsiding or sagging.
  • Remains flexible even at lower temperatures.
  • Withstands weathering.
  • Good ultraviolet rays resistance.
  • Compatible with Wood Frame Foundations requirements.
  • Allows a joint movement up to 7.5% of the original joint width (15% maximum joint movement).
  • Does not require painting; however it can be painted over 24 hours after application (latex paint).

* All Pictures Shown Are For Illustration Purpose Only. Actual Product May Vary Due To Product Enhancement.