This material is a halogen-free graphite-based flexible expansion material that can generate high expansion pressure and expansion volume when expanded, and can be widely used in fireproof plugging of plastic pipes, ventilation ducts and open cavities. fireproof doors, windows and narrow gaps. The product can be coated with aluminum foil.

Density：1250-1300kg/m3

Free Expansion Ratio（550℃，30min，5mm thickness sample）：from 18 to 27

Activation Temperature: 180℃