Home Fire Protection Fire Rated Caulks & Sealants STI SpecSeal® Triple S® Intumescent Firestop Sealant
STI SpecSeal® Triple S® Intumescent Sealant Tube
The Most Versatile 2-Stage Latex Intumescent Sealant
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STI SpecSeal Intumescent Firestop Sealant
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If you need one firestop product that can handle a wide variety of applications, the SSS line of sealants is the right choice for you. This multi-viscosity product offers exceptional shear-thinning qualities, which allow for quick and easy caulking. |
- Water-based compound is easy to clean, use for installs and dispose of
- Two-stage intumescence technology is able to quickly expand in all directions
- Safe because it has low VOC's and contains no solvents or halogens
- Acoustically tested for superior sound-proofing capabilities
- Its innovative, low-shrinkage composition is safe on plastics, does not contain PCB's or asbestos, and remains flexible even when dry to allow normal pipe movement
- Once dry, you can sand and paint the sealant to match the environment
- Provides up to a 4 hour rating when tested to the rigorous requirements of UL 1479 (ASTM E 814); UL 2079 and FM approved
- The red color allows you to quickly identify any missed areas and easily inspect the work
- Excellent seal for safety from not just fire and gasses, but smoke as well
- Warranted against defects by STI
- Made in the USA
Applications:
- Small to medium opening in all common construction
- Medium to large openings in concrete floors and walls
- Medium to large openings in gypsum walls
- Pipes (steel, iron, copper, metallic, plastic, PVC, CPVC, PVDF, PEX, PEX-AL-PEX, ABS, PB)
- Cable, cable trays, and bus duct
- HVAC ductwork
- Insulated pipes
- Complete wood floor fire stopping package for electrical, plumbing, HVAC, TV and telephone
- Plumbing
- Mechanical
- Electrical
- Datacom
- Combustible Penetrants
- Noncombustible Penetrants
- Construction Gaps
| PROPERTIES | SERIES SSS | PROPERTIES | SERIES SSS | |
|---|---|---|---|---|
| Color | Red | STC Rating (ASTM E90/ASTM C919) 62 |
62 | |
| Odor | Mild Latex | VOC Content (EPA Method 24/ASTM D3960) |
0.18 lbs/ gal (22.0 g/L) | |
| Density | 9.4 lbs/gal (1.13 kg/L) | Shelf Rating | 2 years | |
| Solids Content | 80% ± 2% | Expansion Begins | 230°F (110°C) 1st Stage 350°F (177°C) 2nd Stage | |
| pH | 8.3 | Expansion Range | 230°F to > 1,000°F (110°C to > 538°C) | |
| In Service Temperature | 130°F (54°C) | Volume Expansion | > 500% Free Expansion | |
| Flame Spread | 0* | |||
| Smoke Developed | 10* |
* Tested to ASTM E84 (UL723) at 14% surface coverage
Certifications & Approvals:
- California Dept. of Forestry & Fire Protection Approval - PDF

- California Evaluation Report - PDF

- City of New York Approval - PDF

Potential Health Effects:
- Eye: Contact may cause irritation
- Skin: Contact may cause irritation
- Ingestion: Relatively non-toxic
- Inhalation: Irritation of the nose, throat, and lungs may result from over-exposure to vapors or mist
- Chronic (Cancer) information: Not classified as carcinogenic
- Long Tem Toxic Effects: none known
| PART # | DESCRIPTION | SIZE | COLOR | WEIGHT | PRICE |
| STI-SSS100 | STI SpecSeal Triple S Intumescent Premium Grade Sealant | 10.1 oz | orange | 0.90 lbs |
MANUALS -
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