Akfix 840 Fire Block Insulating Foam Sealant with Straw Applicator - 12 oz

Akfix 840 Fire Block Insulating 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 Rating:  Class A
• 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.
• Mould-Proof, Water-Proof, and Paintable: Ensures long-term durability and versatility

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 +68°F (20°C). Application temperature should be between +41°F (5°C) and +95°F (35°C).
• 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 +41°F (5°C) and +86°F (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
Thermal Conductivity: 0.036 W/m.k (at 20°C) (DIN 52612)
Temperature Resistance: -40°F (-40°C) to +194°F (90°C)
Certifications: Class A-Fire Rated (ASTM E84201 / UL Classified, ICC-ESL-1058)