Shenzhen Xunzhi Building Material Industry Co., Ltd.
0 gap sealing rubber strip canbe used for 15 years
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Surface-Mounted Intumescent Fire Seal – Retrofit Strip for Fire Door Upgrades
Product Overview This surface-mounted intumescent fire seal is ideal for upgrading existing doors to meet fire safety codes without replacing entire frames. It offers fast and effective fire gap sealing.
Features Quick installation on existing doors Expands rapidly under fire exposure Strong adhesion to most surfaces No routing or grooving required.
Technical Specifications Material: Intumescent graphite + PSA Thickness: 2mm–5mm Expansion Temp: ~180°C Adhesive Type: High-tack acrylic Color: Brown, White, or Custom Length: Up to 2.1m per strip.
Applications Retrofit upgrades for fire doors Office and classroom entrances Historical building restoration Commercial property compliance.
Customization Options Roll or strip form Pre-cut lengths or spool Custom brand or fire rating print Color-match upon request.