Dowsil 781 Acetoxy Cure Glazing Sealant 310ml

Dowsil 781 Acetoxy Cure Glazing Sealant 310ml is a one‑part, fast‑curing, high‑modulus silicone sealant designed for professional glazing, cladding and general building applications. This dowsil 781 acetoxy cure glazing sealant 310ml formulation provides excellent adhesion to a wide range of materials, including glass, metal, painted surfaces and composite boards, making it suitable for both internal and external sealing tasks.

Its high‑modulus profile delivers strong joint stability and excellent mechanical performance, ideal for perimeter glazing, weather sealing of sheet cladding and draught proofing. The fast acetoxy cure allows installers to work efficiently, reducing downtime and enabling quicker handling in busy installation environments. Dowsil 781 conforms to ISO 11600‑F&G‑20LM, ensuring reliable movement capability and long‑term durability in demanding building conditions.

The sealant is resistant to ozone, ultraviolet radiation and temperature extremes, ensuring long‑term performance in exposed environments. Its combination of high strength, elasticity and substrate compatibility makes it a dependable choice for contractors working across glazing, façade and general sealing applications.

Product Benefits

• High strength
• Good elasticity
• Conforms to ISO 11600‑F&G‑20LM
• Resistant to ozone, ultraviolet radiation and temperature extremes

Common Applications for Dowsil 781 Acetoxy Cure Glazing Sealant 310ml

• Glazing — perimeter glazing, glass‑to‑frame joints and weather seals
• Cladding — sheet cladding interfaces and external weatherproofing
• Draught proofing — sealing gaps around windows, frames and building elements
• General internal sealing — painted surfaces, composite boards and metal interfaces
• Building maintenance — refurbishment sealing and replacement glazing work

How to Apply Dowsil 781 Acetoxy Cure Glazing Sealant 310ml

• Surface preparation — ensure substrates are clean, dry and free from dust, oils and contaminants
• Cartridge setup — cut the nozzle to the required bead size and load into a standard sealant gun
• Applying the bead — apply a continuous bead with steady pressure, ensuring full joint contact
• Tooling the joint — smooth immediately to achieve a uniform finish and proper adhesion
• Curing guidance — allow full cure before exposing the joint to movement, weather or cleaning cycles

FAQs for Dowsil 781 Acetoxy Cure Glazing Sealant 310ml

• Is it suitable for glazing applications? — yes, it is specifically designed for perimeter glazing and glass‑to‑frame joints
• Does it adhere to painted surfaces? — yes, it bonds well to painted aluminium, coated metals and composite boards
• Is it resistant to weathering? — yes, it withstands UV, ozone and temperature extremes for long‑term durability
• What is the curing type? — it is an acetoxy cure silicone with fast skin formation
• Is it suitable for cladding interfaces? — yes, it is ideal for weather sealing of sheet cladding and façade joints

For further information on this product, please click the link to visit the Manufacturer’s website.