Dowsil 781 Black Multi-Use Acetoxy Silicone Sealant, 310ml Cartridge

Description

Dowsil™ 781 Silicone Sealant is a one-part, fast-curing silicone sealant designed for various sealing applications. It adheres strongly to non-porous surfaces such as glass, aluminum, painted surfaces, and composite boards. It offers excellent resistance to aging, shrinkage, cracking, and discoloration, ensuring long-lasting performance. Suitable for glazing, weather sealing of sheet cladding, curtain walls, draught proofing, and internal sealing, it becomes tack-free within one hour and has a working time of 5-10 minutes. Once cured, it is approved for contact with potable water and conforms to ISO 11600-F&G-20LM. The sealant performs well in temperatures from +5°C to +40°C and accommodates joint movements up to ±20%. It is available in black color.

Specifications

• Type: One-part silicone sealant
• Color: Black
• Application temperature: +5°C to +40°C
• Joint movement capability: ±20%
• Resistant to aging, shrinkage, cracking, and discoloration
• Conforms to ISO 11600-F&G-20LM
• WRAS approved for potable water contact once cured

Compatibility and Accessories

• Suitable for non-porous surfaces including glass, aluminum, painted surfaces, and composite boards

Installation

• Apply to clean, dry surfaces within the recommended temperature range
• Ensure proper joint preparation for optimal adhesion
• Allow 1 hour for the sealant to become tack-free
• Work time is approximately 5-10 minutes

Usage

• Use for glazing, weather sealing, curtain walls, draught proofing, and internal sealing
• Apply with a suitable caulking gun
• Allow sufficient curing time before exposure to water or stress

Other Information

• Listed by UK Water Regulations Advisory Scheme (WRAS) for potable water contact