XHM225F

The XHM225F is specifically designed for oversized fire doors and heavy-duty industrial frames that require an expansive 25 mm mounting footprint. This model combines the stability of a broad-base seal with the extreme precision required to manage micro-clearances, making it the premier choice for large-scale architectural projects.

Heavy-Duty Impact Management: The “Butt Seal” architecture of the XHM218F is engineered to handle the high-pressure closing forces of heavy entrance and sliding doors. In everyday service, the high-resilience polyurethane foam acts as a sophisticated shock absorber, dampening mechanical vibrations and providing a silent, premium feel to door operations. Its extra-wide profile ensures a consistent, airtight seal against wind, dust, and sound, maintaining building energy efficiency and acoustic privacy.

Passive-to-Active Fire Defense: The XHM225F is a reactive safety component that activates exactly when needed. When ambient temperatures exceed 200°C during a fire, the internal intumescent core undergoes a rapid chemical transformation. It swells to three times its original thickness, filling the 1.0–1.8 mm perimeter gaps with a dense, non-combustible char. This physical barrier prevents “flame-through” and radiant heat transfer, effectively compartmentalizing the fire and preserving the structural integrity of the door assembly.

Superior Life-Safety Engineering: Smoke inhalation is the leading cause of fatality in building fires, and the XHM225F is built to eliminate this hazard. During rigorous 90-minute fire resistance testing, this seal showed no visible smoke leakage, ensuring that critical exit routes like corridors and stairwells remain clear of toxic fumes. With a thermal tolerance of 980°C, it remains functional and structurally sound throughout the duration of a standard emergency response, providing life-saving time for occupants.