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STI SpecSeal Fire Barrier LCI Intumescent Sealant 10oz Cartridge
SpecSeal LCI300 is a red one-part intumescent latex firestop sealant in a 10.1 oz cartridge for penetrations and construction joints. It stays in place on vertical and overhead work so crews can close metallic pipe, plastic conduit, and cable openings.
- Seals metallic pipe, plastic conduit, cable, and joints in rated walls and floors.
- Stays on vertical and overhead openings so crews can tool a smoke-tight fill.
- Keeps plastic pipe and cable jackets safer with a water-based latex that has no solvents.
$12.77
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SpecSeal LCI300 Intumescent Sealant - 10.1 Oz
SpecSeal LCI300 is a one-part intumescent latex firestop sealant in a 10.1 oz cartridge for penetrations and construction joints. The red water-based sealant stays on vertical and overhead work, bonds to common construction and penetrant materials, and tools into a smoke-tight fill on metallic pipe, plastic conduit, cable, and joints in concrete, masonry, gypsum, and wood-frame assemblies.
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Key Features
- LCI300 is the 10.1 oz cartridge of red intumescent latex for penetrations and construction joints.
- Stays on vertical and overhead surfaces with high-build latex so the fill does not slump.
- Keeps plastic pipe and cable jackets safer because the formula has no solvents that attack those jackets.
- Seals smoke as well as fire so the opening stays a smoke barrier after tool-off.
- Stays water resistant after dry and will not re-emulsify if the assembly later gets damp.
- Cleans up with water as a water-based red latex and can be painted when dry.
- Works with SpecSeal collars and wrap strips on larger plastic pipe when the published design calls for that pairing.
Technical Specifications
| Property | Value |
|---|---|
| Catalog number | LCI300 |
| UPC | 730573011706 |
| Packaging | 10.1 oz tube, 18.2 cu in (300 ml) |
| Color | Red |
| Chemistry | Water-based intumescent latex |
| Volume expansion | 10x free expansion |
| Expansion begins | 350°F (177°C) |
| Application temperature | 35°F to 100°F (2°C to 38°C) |
| In-service temperature | Less than or equal to 185°F (85°C) |
| Shelf life | 24 months from date of manufacture |
Product documents: SpecSeal LCI Intumescent Sealant Product Data Sheet
Frequently Asked Questions
What penetrations and joints is SpecSeal LCI300 made to seal?
SpecSeal LCI300 Intumescent Sealant is a water-resistant intumescent latex for common penetrations and construction joints. The LCI PDS names metallic pipe, iron, copper pipe and tubing, steel conduit, and EMT up to 36 in trade size; non-metallic PVC, CPVC, ABS, and PEX; insulated heating, cooling, and condensation pipe; electrical service, cable trays, and busways; telephone, data, and TV cabling; and structural steel plus HVAC, bath, and dryer metal duct. Typical assemblies include concrete or wood floors, concrete or masonry walls, and gypsum board walls.
How do crews apply the 10.1 oz LCI cartridge on walls and overhead?
LCI is a single-component sealant that may be caulked from a standard cartridge, bulk loaded, knifed, or troweled. The PDS calls out excellent caulking properties and high-build properties on vertical or overhead surfaces. Apply between 35 F and 100 F (2 C to 38 C). Wear site PPE and follow the Safety Data Sheet. Product contains water and is conductive until dry.
Which LCI pack should a crew choose for cartridge work?
Choose SpecSeal LCI300 when the job needs the 10.1 oz tube (300 ml). The live sister sausage is SpecSeal LCI320. The LCI PDS also shows a 5 gallon pail (LCI305) and a 29 oz tube (LCI329); those sizes are not currently live on Indcon. Chemistry is the same red intumescent latex across those catalog numbers.
What happens to LCI300 when fire hits the sealant?
The sealant exhibits a free expansion of up to 10 times original volume when exposed to high heat or flame. Expansion begins at 350 F (177 C). LCI is the basis for systems that meet ASTM E814 (UL1479), ASTM E1966 (UL2079), and CAN/ULC-S115, and it provides up to a 4-hour fire rating for typical service penetrations through the constructions named on the PDS. Follow the published design; do not invent a system number.
What temperature window can crews apply and then leave LCI300 in service?
Application temperature is 35 F to 100 F (2 C to 38 C). In-service temperature is less than or equal to 185 F (85 C). Store unopened material at 40 F to 95 F (4 C to 35 C). Shelf life is 24 months from the date of manufacture. The dried sealant is paintable and auto-bonding.
What safety limit applies while SpecSeal LCI300 is still wet?
The PDS states the product contains water and is conductive until dry. Do not apply in the presence of exposed or energized electrical conductors. After dry it is water resistant and will not re-emulsify. Consult the pipe, tubing, or cable maker for known sensitivities; STI does not guarantee compatibility with every plastic, even though the formula contains no solvents that might adversely affect plastic pipes or cable jackets.
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