Akfix 840 Fire Block Insulating Straw Foam Sealant 12 oz

Akfix 840 Fire Block Insulating Straw Foam Sealant is a high-performance, fire retardant, self-extinguishable polyurethane foam designed specifically for applications where fire block compliance is required. This product provides excellent adhesion and insulation properties, making it ideal for various building and construction applications.

Features & Benefits

• Fire Rated: Conforms to fire class B2 according to DIN 4102-1, providing moderate fire safety.
• Excellent Adhesion & Filling Capacity: Adheres well to most building materials and fills gaps efficiently.
• High Expansion Rate: Suitable for filling wide gaps and cavities.
• Economical Consumption: Precise application ensures minimal waste.
• High Yield: Up to 55 liters depending on temperature and humidity.
• Mould-Proof, Water-Proof, and Paintable: Ensures long-term durability and versatility.
• UL Certification: The product is classified by UL LLC (UL) with UL Certification.

Application Areas

• Insulating Electrical Outlets and Water Pipes: Provides effective insulation for electrical and plumbing applications.
• Door & Window Frames: Ideal for fixing and insulating door and window frames.
• Filling & Sealing Gaps, Joints, and Cavities: Suitable for various sealing applications in construction.
• Wall Penetrations: Efficiently fills penetrations in walls.

How to Use

• Preparation: Ensure the can temperature is +20°C (68°F). Application temperature should be between +5°C and +35°C (41°F to 95°F).
• Shaking: Shake the can well before use.
• Application: Screw the straw adapter onto the valve, hold the can upside down, and press the valve to dispense the foam.
• Surface Moistening: Moistening surfaces and the foam improves adhesion and shortens curing time.
• Cleaning: Clean fresh foam with Akfix Foam Cleaner. Cured foam can be removed mechanically.
• Storage and Shelf Life: 12 months if stored properly between +5°C and +30°C.

Specs

• Basis: Polyurethane Prepolymer
• Curing System: Moisture cure
• Tack-Free Time: 6±2 minutes (ASTM C1620)
• Cure-Time: 24 hours
• Foam Color: Light red
• Yield: 45-55 liters (ASTM C1536)
• Fire Class: B2 (DIN 4102-1)
• Thermal Conductivity: 0.036 W/m.k (at 20°C) (DIN 52612)
• Can Temperature: Min. 5°C (41°F), Max. 30°C (86°F)
• Temperature Resistance: -40°C to +90°C (-40°F to +194°F)
• Application Temperature: +5°C to +35°C (41°F to 95°F)