Intumescent Sodium Silicate is  rigid expansion material. The product has a low expansion temperature and starts to expand at about 120°C. After expansion, it can produce a good rigid foam insulation layer. It is suitable for fireproof sealing of gaps in fireproof safes and gun cabinet components. It can also be embedded in wooden fireproof door panels to play a good fireproof and heat-insulating role.

Thickness : 2~4mm

Length : ≤2100mm

Density：1400~1600kg/m3

Free Expansion Ratio（550℃，15min，2mm thickness sample）Height ≥6

Activation Temperature: 120℃