SpecSeal SSS100 Firestop Sealant is a premium grade water-based Intumescent firestop sealant. SpecSeal SSS Sealant incorporates our proprietary two-stage intumescent technology making it the go to choice for any combustible or non-combustible penetrants. As little as a 1/2" applied depth of SSS Sealant is required to provide up to a 4 Hr Fire resistance rating when tested to ASTM E814/UL 1479.

•  Water-based - easy installation, cleanup, anddisposal
• Two-stage intumescence - extremely fast and directionalized expansion
• Endothermic fillers - absorb heat & release water
• High solids formula - minimal shrinkage
• Sandable & paintable (when dry)
• Water-resistant - will not re-emulsify when dry
• Safe for contact with plastics
• Red color - easy identification and inspection
• Multi-viscosity grade - excellent caulking properties along with high build capabilities
• Excellent smoke seal
• Non-halogenated
• Safe, no asbestos, no PCB's, no inorganic fibers
• Meets LEEDTM v3 requirements. 
• Low emitting materials credit. 

10.1 oz Tube