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6.5.3 Hilti Firestop Systems

6.5.3.1 TECHNICAL DATA

FS-ONE High Performance Sealant is a one-part, ready to use fire rated sealant designed for firestopping through-penetrations in fire rated construction. When cured it forms a strong, flexible barrier which expands when exposed to heat, impeding the spread of flames, smoke and toxic gases through penetrations.

Typical Properties of FS-ONE High Performance Intumescent Firestop Sealant

Consistency non-sag, gun grade
Working Time 20-30 min
Skin-Over Time 3-6 min
Application Temp. Range min 40°F, max 100°F
As Cured
Full Cure approx. 14-21 days
Density 1.5 g/cm3
Intumescent Activation Temp. approx. 300°F - 500°F
Volatile Solvents None
Combustibility Non-combustible
Surface Burning Characteristics: Flame Spread Index = 0
(ASTM E 84-91a) Smoke Developed Index = 5

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