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STI - Firestop Authority
SpecSeal® LC Endothermic Firestop Sealant - 20 Oz. Sausage
QXO product C-385358 · 1 options
Selected: STC LC120 ENDOTHERMIC SEALANT
QXO SKU 385358 · Product number STCLC120
Free, no-obligation quote. Our team confirms local availability, required quantities, compatible components, and installation pricing.
Selected option specifications
- UOM
- EA|CTN|SGE
- Item Weight
- 2
- Algae Resistance
- No
- Applicable Standards
- ASTM E814 (UL1479) CAN/ULC S115 ASTM E1966 (UL2079) UL Certified FM Approved LEED
About this product
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.



