Premium grade, water-based firestop sealant featuring STI’s patented two-stage intumescent technology. The perfect choice for the broadest array of combustible and noncombustible penetrants requiring a permanent, durable seal. SpecSeal LCI Sealant is a versatile and economical intumescent product intended for firestopping a wide array of applications in small commercial or grouped residential construction and other structures with similar applications. 

SpecSeal LCI Sealant is storage stable (when stored according to the manufacturer s recommendations), and will not separate or shrink when dried. SpecSeal Series LCI Sealant will adhere to all common construction and penetrant materials and contains no solvents that might adversely effect plastic pipes or cable jackets.