LC120 Firestop Sealant - 20 oz Sausage | UL Listed Endothermic Fire Sealant
Original price
$13.29
-
Original price
$155.88
Original price
$13.29
$13.29
-
$155.88
Current price
$13.29
LC120 Firestop Sealant - 20 oz | UL Listed Endothermic Fire Sealant
SpecSeal® LC120 Firestop Sealant is a high-performance, UL listed firestop sealant designed to seal construction joints and non-combustible penetrations. This latex-based, endothermic fire caulk cures to form a flexible, durable seal that resists the passage of smoke, toxic gases, and fire. With heat-absorbing fillers that release water vapor under fire exposure, LC120 delivers proven protection in demanding commercial and industrial environments. It installs easily using a standard sausage caulking gun and can be troweled for larger joints.
Key Features
- 20 oz sausage (36 cu in / 592 ml); 1.70 lbs
- Latex-based firestop with high solids content for minimal shrinkage
- Endothermic technology absorbs heat and releases moisture to delay fire spread
- UL tested and listed in over 80 approved firestop systems
- Flexible seal; maintains performance through building movement (up to ±12.5%)
- Water-resistant, mold-resistant (ASTM G21), and paintable when dry
- Safe for use around most plastic pipes and cables (non-halogenated, no asbestos)
- Deep red color for quick inspection and identification
- Installer-friendly—easy application and cleanup
Test Standards
- ASTM E814 / UL 1479
- ASTM E1966 / UL 2079
- CAN/ULC-S115
- ASTM E90 (STC 61 rating)
- ASTM G21 (Mold Growth Rating: 0)
Perfect For
- Firestopping metallic pipe penetrations up to 30"
- Joint sealing in gypsum, concrete, or block walls
- Commercial builds requiring UL-listed firestop sealant
- Contractors seeking a high-solids, non-shrinking fire caulk
Note: Do not apply to live electrical conductors. Product is conductive until dry.
|
Property
|
Value
|
|---|---|
| Color | Red |
| Flame Spread | 0* |
| Smoke Development | 10* |
| Mold & Fungus Growth Rating (ASTM G21) | 0 |
| Movement Capabilities | ± 12.5% or 25% in compression only** |
| In Service Temperature | Less than 185°F (85°C) |
| Storage Temperature | 40°F (4°C) to 95°F (35°C) |
| Application Temperature | 35°F (2°C) to 100°F (38°C) |
| STC Rating (ASTM E90-04/ASTM C919) | 61 (Relates to Specific Construction) |
| VOC Content | 57 g/L*** |
| Average Volume Shrinkage (ASTM C1241) | 21.5% |
| pH | 7.4 to 8.4 |
| Solids Content by Weight | 81% |
| Solids Content by Volume | 75.2% |
| Density/Weight per Gallon | 10.7 lb/gal (1.28 kg/L) |
| Shelf Life From Date of Manufacture | 24 months |
| Notes | *Tested to ASTM E84 (UL723) at 14% surface coverage (modified test for sealants and caulks) **500 Cycles per UL2079, AC30 (ICBO) and ASTM E1399 ***Per SCAQMD Rule 1168 (EPA Method 24) |
Specified Technologies Inc
L120