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SpecSeal LC Endothermic Sealant

SpecSeal LC Endothermic Sealant is a latex-based gun grade firestop sealant for construction joints and non-combustible penetrations. After application, LC Sealant cures to form a flexible seal against the propagation of fire. Under fire exposure, LC absorbs heat and release water vapor resisting the progress of smoke and flame.

Third Party Approvals

Technical Document

  • Water-based – easy installation, cleanup, & disposal
  • Endothermic fillers – absorb heat & release water
  • High solids formula – minimal shrinkage
  • Paintable when dry
  • Safe, low VOC’s, no asbestos, no PCB’s, no inorganic fibers
  • Red color available for easy identification and inspection
  • Installer friendly – excellent caulking properties along with high build capabilities
  • Excellent smoke seal
  • Flexible
  • Non-halogenated
  • Auto bonding
  • Meets LEEDTM v3, v4, & v4.1 requirements. Low emitting materials credit. See general LEED letter for additional applicable credits.

Blank Openings, Cables, Duct Work, Metallic Pipes, Expansion Joints