Flexible graphite intumescent seal, rubber coated, 50 m roll

An intumescent seal for the gap between leaf and frame of steel and timber fire doors. In a fire the strip expands and closes the gap, holding back smoke, toxic gas and heat and slowing the spread of fire. It is glued into a groove in the frame or the leaf edge; the mill can supply it with adhesive backing, or it can be fixed into the groove with small pins.

Intumescent graphite core with a rubber coating, flexible, 2 mm thick, brown. Thickness x width (mm): 2x10, 2x15, 2x20, 2x25. Sold in 50 m rolls. The catalogue prints no activation temperature, expansion ratio or fire test certificate.