SpecSeal® SIL Silicone Firestop Sealant
Product Description The STI SpecSeal® SIL300 Silicone Firestop Sealant is a one-part, neutral-curing silicone firestop sealant designed to control the spread of fire, smoke, toxic gases, and water in fire-rated walls and floors. It offers superior water resistance, UV stability, and chemical durability, making it ideal for both through penetrations and construction joints. Available in […]
SpecSeal® AS200 Elastomeric Spray
Product Description The SpecSeal® CS105 Cable Spray is a latex-based, ablative elastomer that also intumesces to protect electrical and communications cables against flame propagation. When applied to grouped or tray-installed cables, it forms a flexible, water- and weather-resistant shield that limits flame spread and helps maintain short-term circuit integrity during fire exposure. It adheres to […]
SpecSeal® CS105 Cable Spray
SpecSeal® CS105 Cable Spray is a latex-based, ablative elastomer that intumesces to protect electrical cables against flame propagation. This water-based coating limits flame spread according to IEEE 383, IEEE 1202, IEC 60332-3, and Factory Mutual Class 3971 standards while providing exceptional coverage rates and easy application by spray or brush methods. Key Features & Benefits […]
SpecSeal® Fast Tack® Firestop Spray
Product Description The STI SpecSeal® Fast Tack® Firestop Spray is an elastomeric, single-component advanced hybrid polymer coating designed to provide passive fire and smoke protection in construction joints. Applied by airless spray, brush, or roller, it cures rapidly into a durable, flexible, water-resistant barrier that withstands fire, smoke, and combustion byproducts. Ideal for curtain wall […]
SpecSeal® LCI Intumescent Sealant
Product Description The STI SpecSeal® LCI Intumescent Firestop Sealant is a versatile, economical latex-based firestop compound with excellent caulking and high-build properties. It expands up to 10× its original volume under heat, sealing penetrations against fire, smoke, and gases. Designed for metallic and non-metallic pipes, insulated pipes, cables, busways, structural steel, and HVAC ducts, it […]
SpecSeal® ES Elastomeric Firestop Sealant
Product Description The STI SpecSeal® ES Elastomeric Firestop Sealant is a non-halogenated, latex-based elastomeric caulk designed for passive smoke and fire protection in construction joints. It restores sound attenuation in rated assemblies and forms a flexible, water-resistant barrier against fire propagation. Easy to apply with standard caulking equipment, it adheres to most construction surfaces and […]
The SpecSeal® LC Endothermic Firestop Sealant
Product Description The STI SpecSeal® LC Endothermic Firestop Sealant is a high-solids, latex-based firestop compound formulated with endothermic fillers that absorb heat and release water during fire exposure. It effectively seals joints and penetrations against fire, smoke, hot gases, and water, forming a flexible, durable barrier. Non-halogenated and asbestos-free, it is engineered for easy application […]
SpecSeal® Firestop Blocks
Product Description The STI SpecSeal® Firestop Blocks are lightweight, intumescent polyurethane foam blocks designed for easy penetration firestopping. Installed like foam bricks, they expand under heat to block fire, smoke, and gases, providing up to a two-hour fire rating. Ideal for cables, trays, pipes, and mixed penetrations, they are reusable and retrofit-friendly for both new […]
SpecSeal® Quick Clip Field Installation System
Product Description The STI SpecSeal® Quick Clip™ Perimeter Fire Barrier System is an innovative curtain wall perimeter fire containment solution designed to speed installation and improve worker safety. Using pre-engineered U- and Z-Brackets, the system supports mineral wool and SpecSeal® coatings without the need for cutting or impaling pins. The Quick Clip™ fasteners lock insulation […]
SpecSeal® SSP Putty & Putty Pads
Product Description The STI SpecSeal® SSP Putty & Putty Pads are non-hardening, intumescent firestop materials designed to seal penetrations and electrical boxes against fire, smoke, and hot gases. They expand up to 8× under heat, creating a flexible, endothermic barrier that absorbs heat and releases water. Putty can be hand-packed into openings for pipes, cables, […]
SpecSeal® SSS Intumescent Firestop Sealant
Product Description The STI SpecSeal® SSS Intumescent Firestop Sealant is a latex-based, high-solids firestop compound that seals penetration openings against fire, smoke, hot gases, and water. It features STI’s proprietary two-stage intumescent technology, expanding aggressively when exposed to high temperatures to quickly seal voids. Its multi-viscosity formulation provides excellent caulking and high-build properties for vertical […]
SpecSeal® EP Powershield™ Electrical Box Insert
Product Description The STI SpecSeal® EP Powershield™ Electrical Box Insert is a one-component intumescent pad designed for use inside electrical switch and receptacle boxes. It installs directly against the back wall of the box and expands up to 24× its original size when exposed to fire, quickly sealing off flames, smoke, and gases. The insert […]