RPB series flexible fireproof intumescent seal

• Expansion ratio:20-30times

• Fire rated test: BS476

• Function: Seal gap to prevent fire and heat spreading

• Product comes with strong self-adhesive

• Length: 50m/roll or customized

分类： Paper Box for Food

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How fireproof intumescent seals work

RPB series flexible fireproof intumescent seal is made from an unique chemical formulation based
upon expandable graphite. When fire happens, it will expand 20-30 times than original volume to
seal the gap between door and frame to avoid fire and heat spreading to the safes inside.