DAP Firebreak Flame Resistant Sealant, 12 OZ, Flame Resistant All Purpose, Class 1 Fire Retardant Foam Sealant That Exceeds Testing Standards, Self Extinguishing & Works By Eliminating Oxygen Flow In Service Penetrations Where Fire Spreads Most Quickly, Using Firebreak In These Penetrations Means Fire Will Take Longer To Burn Through To Adjoining Rooms, Giving You Valuable Time To Get To Safety, Meets UL 1715, Ul94 V-O, ASTM 814 E-84, Tinted Bright Orange For Easy Identification.