ASMACO Intumescent Acrylic Fire-Resistant Sealant

ASMACO Intumescent Acrylic Sealant is a specialized fire-protection product engineered to maintain the integrity of fire-rated assemblies. As a one-part, ready-to-use acrylic formulation, it provides a flexible yet durable seal for internal perimeter joints where fire and smoke containment is critical. Unlike standard sealants, this product features intumescent technology that activates upon exposure to high temperatures, expanding significantly to form a char layer that blocks the passage of flames and toxic smoke.

Key Features

• Intumescent Action: Expands under fire exposure to fill gaps and enhance fire resistance ratings.
• One-Part Application: No mixing required; ready for immediate application from the cartridge.
• Water-Based & Low Odor: Safe for indoor use with minimal environmental impact.
• Paintable Surface: Can be painted over after curing to match architectural finishes.
• Flexible Curing: Maintains adhesion and flexibility to accommodate structural movement.

Applications

This sealant is ideal for sealing gaps around fire-rated door frames, window frames, and internal wall penetrations in commercial, residential, and industrial buildings. It is commonly used in conjunction with fire-rated back-rods and other passive fire protection systems to ensure compliance with fire safety standards.