Intumescent Expanding Fire Seal Strip – Graphite-Based Passive Fire Protection for Door Gaps

Product Overview This expanding fire seal is made from intumescent graphite material that expands rapidly when exposed to heat, sealing gaps in doors and other structures to prevent the spread of smoke and flames.

Features Heat-activated expansion up to 30x original volume Self-adhesive backing for easy installation Durable and moisture-resistant Low-profile design compatible with standard frames.

Technical Specifications Material: Graphite-based intumescent strip Expansion Temperature: Starts at 180°C Expansion Ratio: Up to 30:1 Standard Widths: 10mm, 15mm, 20mm Thickness: 1.5mm–4mm Color: Black, Brown, White.

Applications Fire-rated wooden or metal doors Steel and timber frame construction Smoke control systems Server room, laboratory, and office partitions.

Customization Options Custom width, thickness, and length Color matching to door/frame Logo embossing or printed liner Combination with brush or smoke seals.