Product name: Rigid intumescent fire seal fireproof weather strip seal for door Material: Expandible graphite and Thermoplastic element composition Size : 20*4mm, Brush height 5mm; 10*4mm,15*4mm,30*4mm etc. Color: Red, brown, white, black,etc. Initial expansion temperature: 199�ºC Main expansion temperature: 347�ºC Linear expansion ratio: â?¥3 times,5-10times,10-20times,20-30times Function:When on fire, the rapid expansion, closed doors and windows crack, prevent smoke and heat channeling into, to ensure personal safety, Sound insulation Application: Fire-proof door, wooden door,community security door, heating furnace, heat sink, building pipe wells etc.