Firestop Sealants

Professional Firestop Sealants for HVAC & Construction

Shop professional firestop sealants for penetrations through fire-rated walls and floors. Solid Source HVAC supplies firestopping products for HVAC, plumbing, electrical and multifamily construction applications.

Our selection includes Hilti FS-ONE MAX Intumescent Firestop Sealant for common pipe, cable and mixed penetrations in concrete, masonry and drywall assemblies.

Need job quantities? Buy 12+ Hilti FS-ONE MAX cartridges and save 15% automatically at checkout, or contact us for contractor and project pricing.