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Firestop Sealants, Caulks and Putties

40 results found that include 95 products

Guard against smoke, toxic fumes and moisture with firestop sealants, caulks and putties from Grainger. Intumescent fire seal ensures a tight, dependable seal while fire-resistant putty can help prevent smoke, fumes and moisture from spreading for up to 4 hours. Use mortar for large opening in concrete. it withstands cracking due to temperature fluctuations. Firestop sealants, caulks and putties are suitable for new construction or retrofitting jobs.Close

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