XHM204F

The XHM204F series represents a sophisticated advancement in architectural safety, merging the daily functional requirements of high-traffic doors with critical life-safety fire protection. Unlike standard weather stripping, this dual-layered system acts as both a durable environmental seal and an active fire barrier.

Intelligent Thermal Response: The hallmark of the XHM204F is its reactive intumescent core. During normal operation, the polyurethane foam provides a soft, acoustic-dampening seal that improves the “hand-feel” of the door and prevents drafts. However, when temperatures reach critical levels during a fire, the internal core undergoes a chemical transformation. It expands significantly to fill the specific gaps between the door and frame, creating a physical barricade that prevents oxygen from feeding the fire and keeps toxic smoke from entering safe zones.

Unrivaled Smoke Suppression: In many fire scenarios, smoke inhalation is a greater threat than the flames themselves. This seal is specifically engineered to address this, maintaining a smoke-tight environment for over 90 minutes during rigorous testing. This extended window provides vital extra time for building evacuations and emergency response, ensuring that the gaps at the top and sides of the door do not become pathways for hazardous fumes.

Durability and Precision Engineering: Designed for a precise 11 mm width, the XHM204F is optimized for narrow clearance gaps between 1.2 mm and 1.8 mm. Its fire-retardant polyurethane construction ensures that it won’t become brittle over time, maintaining its elasticity through thousands of door cycles. Whether installed in a commercial entrance or a residential fire door, the seal remains inconspicuous until it is needed most, providing a seamless blend of aesthetics and heavy-duty protection.