In case of fire, the fire-proof expansion seal will automatically expand, seal the gap between the door and block the air circulation between the two spaces, effectively prevent the harm of smoke and hot air on human body in the early stage of fire, and control the fire spread. The sealing strip can be pasted in the groove of the fire door with glue (the self-adhesive has been pasted), and can be fixed in the groove of the fire door with small nails. The application of the product has replaced the asbestos rope used in the gap of the fire door in China, and has been tested by the national quality supervision and Inspection Center for fixed fire extinguishing system and fire-resistant components, and all indexes are qualified. 1. Expansion temperature: the initial expansion temperature is 199 ℃, and the main body expansion temperature is 347 ℃; 2. Linear expansion ratio: greater than or equal to 3 times of the original expansion body thickness; 3. High temperature resistance and combustion performance: when the temperature rises to 980 ℃ and keeps for 30min, it will not burn or ash; 4. Smoke proof performance: after 72 min of fire resistance test, there is no obvious smoke leakage at the gap of left, right and upper side of the door seal, and the smoke prevention performance is greater than 72 min. 5. Environmental resistance: the expansion ratio remains unchanged after 120 days of storage at room temperature and 90 humidity.  

Regular size: 2mm * 20MM * 1050mm, 2mm * 15mm * 1050mm, 2mm * 10mm * 1050, 4mm * 20MM * 2100mm, 4mm * 15mm * 2100mm, 4mm * 10mm * 2100mm