Adhesive for aluminum door corners, aluminum frame windows, aluminum flash doors | Bostik Aluseal

  • Specializes in sealing aluminum door corners, aluminum frame windows, and aluminum flash doors.
  • Filling small chamfer joints in aluminum door/window manufacturing.
  • Quick curing.
  • Provides a resilient cushion layer for butt joints and chamfer joints of various connecting lines in metal window frames, aluminum blinds.
  • Effective in preventing corrosion of joints due to oxidation processes at edges.
  • Suitable for both interior and exterior use.
  • Good flexibility.
  • Excellent wetting and filling properties.

Adhesive for aluminum door corners, aluminum frame windows, aluminum flash doors | Bostik Aluaseal

Aluseal by Bostik is formulated to seal aluminum window joints and can be used for both interior and exterior applications. It exhibits excellent weather resistance and good flexibility. For best adhesion, apply with a brush or a caulking gun on clean and dry surfaces.

Product Advantages:

  • Strong Adhesion: The product offers high adhesion, securely connecting aluminum pieces and aluminum frame windows.
  • Good Waterproofing: Bostik Aluaseal silicone adhesive has good waterproofing ability, preventing water and weather ingress into doors and window corners, minimizing contact with corrosive agents like oxidants.
  • Weather and Temperature Resistance: Designed to withstand harsh temperatures and weather conditions, it expands and contracts with temperature changes, maintaining the flexibility of aluminum door and window structures.
  • Easy to Use: Bostik Aluseal Small Joint Sealer can be easily applied by hand or with a caulking gun, and it works on various surfaces like aluminum, glass, and tiles.

Surface Preparation:

Always ensure surfaces are dry and free from oil, dust, and grease. Use a two-stage cleaning process for non-porous substrates. Ensure clean cloths and change frequently. Use suitable cleaning agents. Quickly remove excess with a clean cloth.

Instructions for Use:

Load the product into the caulking gun. Apply a continuous bead of adhesive to joint surfaces. Apply the sealing compound into the joint to eliminate air bubbles and ensure complete sealing.
Allow to dry for at least 4 hours. Low temperatures and high humidity will extend drying time.

Cleaning Instructions:

Use acetone. Do not thin the sealant.

Storage Instructions:

Store in a cool, dry place below 25°C, away from direct sunlight and heat sources/ignition. Shelf life is 12 months from the date of manufacture when stored as directed.


  • Bostik Aluseal is not suitable for joints larger than 2 mm.
  • Do not mix or come into contact with other sealing compounds or solvents.
  • Avoid leaving sealant on decorative finishes longer than necessary, as prolonged contact may lead to changes in decorative finishes.


Product name Keo/silicone/sealant Bostik Aluaseal
Application aluminum door corners, aluminum frame windows, aluminum flash doors
Water resistance excellent
Surface drying time 25 – 35 mins
curing time At least 21 days for a 2mm thick film
Application temperature 5 – 30°C
Application temperature 0 – 70°C
Shore A hardness 40 – 50
Adhesion strength when pulling the coating off the surface Good
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