LC120 SpecSeal LC Endothermic Firestop Sealant, 20 oz

The LC120 Endothermic Firestop Sealant is a professional, water-based fire protection sealant designed for sealing compatible construction joints and noncombustible penetrations in fire-rated building assemblies. Featuring a latex-based formulation with endothermic fillers, this sealant helps resist the spread of fire, smoke, and heat when installed as part of an approved firestop system.

Engineered for effective fire protection, the LC120 contains endothermic fillers that absorb heat and release water vapor during fire exposure. This process helps slow the progression of heat and flame through treated joints and penetrations.

The sealant features a high-solids formulation designed to minimize shrinkage during curing. Once applied and cured, it forms a flexible seal that accommodates movement within the limitations of the approved firestop system.

Its gun-grade consistency offers convenient application using compatible dispensing equipment. The material provides excellent caulking characteristics and high-build capabilities, allowing installers to apply it to suitable joints, gaps, and penetration openings.

The water-based formulation simplifies installation, tool cleanup, and disposal compared with solvent-based materials, subject to applicable handling and disposal requirements.

The LC120 is formulated with low volatile organic compound (VOC) content and does not contain asbestos, PCBs, or inorganic fibers, according to the supplied product information. Its non-halogenated composition makes it a practical option for projects with specified material requirements.

The sealant is red for easy identification during installation and inspection. Once fully dry, it can be painted to match surrounding building finishes.

Designed for commercial construction, building renovations, and firestop maintenance applications, the LC120 provides a flexible solution for compatible construction joints and noncombustible service penetrations.

10 Key Features

1. Endothermic Fire Protection: Absorbs heat and releases water vapor during fire exposure to help resist fire propagation.

2. 20 oz Sealant Package: Supplied as a 20-ounce gun-grade firestop sealant.

3. Water-Based Latex Formulation: Supports convenient application and cleanup with appropriate procedures.

4. Flexible Cured Seal: Forms a flexible barrier after curing for compatible construction joint applications.

5. High-Solids Formula: Designed to minimize shrinkage during the curing process.

6. Fire and Smoke Sealing: Helps restrict smoke and flame migration through approved joints and penetrations.

7. Low-VOC Composition: Formulated with low volatile organic compound content.

8. Non-Halogenated Material: Contains no asbestos, PCBs, or inorganic fibers, according to the supplied description.

9. Paintable When Dry: Allows the cured red sealant to be painted for a coordinated architectural finish.

10. Installer-Friendly Application: Features gun-grade consistency, good caulking properties, and high-build capability.