Fire Break 814 Intumescent Fire and Draft Sealant

Fire Break 814 is a commercial grade, intumescent fire, smoke and draft stop. Cures to a highly flexible state that is ideal for dynamic expansion joints or penetrations that experience vibration or thermal shock.
ASTM-E814; rated at 3000F for 8 hours.
ASTM-E136 Non-Combustible
Flame Spread 0
Smoke Developed 0
Interior/Exterior Use
Shelf Life: 12 months