A versatile, 1-component, water based, non-combustible draft, smoke and fireblocking sealant, designed to resist high temperatures and smoke passage in non-rated construction. Meets ASTM E136 non-combustibility requirements. Gray color, no mixing required. Product can be installed with a standard caulking gun or it can be easily applied with a putty knife or trowel. 3M™ fire block sealant FB 136 will bond to concrete, brick, metals, wood, plastic and cable jacketing. 3M™ fire block sealant FB 136 meets current international building code (IBC), international residential code (IRC), international residential mechanical code, international fuel gas code and NFPA 5000 draft, smoke and fireblocking requirements.