ST88 Mastic

ST88 FR Intumescent Acrylic Sealant reduces the transmission of sound through joints and is a one part fire resistant gun grade joint and penetration sealant. In fire conditions the sealant chars and expands preventing the spread of fire and smoke through the joint seal.

• 4 Hour fire rating - BS 476:20:  EN 1366-3
• 1 Hour fire rating - BS 476:22 
• Tack-free when dry
• low shrinkage
• water-based
• 310ml/tube

25 Tubes / box