STI SpecSeal LC Endothermic Firestop 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 releases water vapor resisting the progress of smoke and flame.

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Product Description

SpecSeal LC Sealant is designed primarily for sealing construction joints and gaps as well as penetrations for noncombustible penetrants. SpecSeal LC has been tested and approved for single metallic pipe penetrations up to 30” (762 mm) as well as multiple penetrants through both masonry and gypsum wallboard constructions. Additional systems have been tested for steel sleeved penetrations as well as some common electrical and communications cable penetrations and joint penetrations.

  • Installer Friendly, easily applied with standard caulking gun
  • Can be troweled on for larger applications
  • Tested for up to 4 Hours of fire resistance when tested to ASTM E1966/UL2079, ASTM E814/UL1479, and CAN/ULC-S115
  • Listed in over 80 UL Tested Firestop Systems!

STI SpecSeal LC Endothermic Firestop Sealant Product Data Sheet

STI SpecSeal LC Endothermic Firestop Sealant Safety Data Sheet

STI Through Penetration Sealants Installation Sheet

STI Construction Joint Sealants Installation Sheet

STI Through Penetration Sealants Product Estimation Sheet

STI Joint Sealants Product Estimation Sheet

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