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All Categories > Fire Protection Products > STI Spec Seal > SSS Series Intumescent Sealant  
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SSS Series Intumescent Sealant

SpecSeal Series SSS Sealant is a latex based, high solids firestop compound. This material, when properly installed, will effectively seal penetration openings against the spread of fire, smoke, toxic gasses and water. SpecSeal® Series SSS Sealant features STI’s patented and proprietary two-stage intumescent technology. When exposed to high temperatures or fire, this material expands aggressively in a highly directionalized fashion to quickly close off voids left by the burning or melting of combustible materials.
SpecSeal Series SSS Sealant’s unique multi-viscosity formula yields a single grade that has excellent caulking properties as well as high build properties on vertical or overhead surfaces. This single grade may be pumped, caulked (standard cartridge or bulk loaded), knifed or troweled. In addition, SpecSeal Series SSS Sealant does not contain PCB’s or asbestos.

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Product Name


Unit Quantity

SSS100.SC STI SSS Series Intumescent Sealant 12 Cartrdiges per Case 10.1 Ounce Standard Cartridge
SSS120.SS STI SSS Series Intumescent Sealant 12 Sausages per Case 20 Ounce Sausage
SSS129.QC STI SSS Series Intumescent Sealant 10 Cartridges per Case 29 Ounce Quart Cartridge
SSS105.5G STI SSS Series Intumescent Sealant 5 gallon pail Per Gallon in 5 Gallon Pail


STI SpecSeal SSS 100 Data Sheet

STI SpecSeal SSS 100 MSDS