Parcel Orders over $300 Ship Free.
STI SpecSeal LCI300 Fire Barrier Intumescent Sealant 10oz Cartridge
Versatile and economical intumescent sealant that has excellent caulking properties as well as high build properties on vertical or overhead surfaces. SpecSeal LCI Sealant will adhere to all common construction and penetrant materials and contains no solvents that might adversely effect plastic pipes or cable jackets.
- Single component
- Will not separate or shrink when dried
- Can be caulked, knifed, or troweled
$12.77
Availability:
In stock
( 48 Available )
SKU
22968
STI SpecSeal LCI300 Fire Barrier LCI Intumescent Sealant – 10 oz Cartridge
SpecSeal LCI300 is a versatile, latex-based intumescent firestop sealant for penetrations and joints in rated assemblies. It expands when exposed to heat to help close gaps around combustible penetrants, forming a durable smoke- and fire-resistant seal. The red, paintable formula installs easily, cleans up with water, is water resistant when dry, and is designed to be safe with many plastics.
Key Features
- Highly intumescent; expands up to 10x under heat.
- Water based for easy installation and cleanup; water resistant when dry.
- Paintable, low VOC, non-halogenated; high-solids formula minimizes shrinkage.
- Auto-bonding; adheres to common construction and penetrant materials.
- Acoustically tested to help reduce sound transmission.
- Tested systems provide fire ratings up to 4 hours when installed per listings.
Applications
- Through-penetrations in concrete, masonry, gypsum board, and wood-frame assemblies.
- Metallic and nonmetallic pipe, conduit, cable bundles, and insulated pipes (per tested systems).
- Construction joints and perimeter gaps as detailed in listed firestop designs.
- Retrofit resealing during maintenance or tenant improvements.
Technical Specifications
| Color | Red |
| Chemistry | Latex, intumescent, high solids |
| Free Expansion | Up to 10x original volume |
| Expansion Begins | Approximately 350°F (177°C) |
| VOC Content | About 26 g/L |
| Solids (by weight / volume) | ~80% / ~70.8% |
| Density | ~12.3 lb/gal (1.47 kg/L) |
| Application Temperature | 35°F to 100°F (2°C to 38°C) |
| In-Service Temperature | ≤185°F (85°C) |
| Storage Temperature | 40°F to 95°F (4°C to 35°C) |
| Shelf Life | 24 months (unopened, proper storage) |
| Acoustic Rating (STC) | STC 62 (relates to specific construction) |
| Compliance | ASTM E814 (UL 1479), CAN/ULC-S115; Class A surface finish to ASTM E84 |
| Unit Size (this item) | 10.1 oz cartridge (300 mL) |
| Case Quantity / Each Weight | 12 per case / ~1.05 lb each |
Frequently Asked Questions
Where is LCI300 used?
In rated walls and floors to seal penetrations and joints per listed firestop systems.
Is it paintable and water resistant?
Yes. It can be painted when dry and is water resistant after cure; clean up with water before curing.
Is it compatible with plastics?
It is designed to be safe with many plastic pipes and cable insulations. Confirm with the manufacturer for specific materials.
Any electrical precautions?
The wet sealant is conductive until dry. Do not apply near exposed or energized conductors.
What fire ratings are available?
Tested systems provide ratings up to 4 hours when installed according to the listed design.
Please complete your information below to login.