Please note that Hilti FS 657 is being discontinued and replaced with Hilti CFS-BL Firestop Block.  Designed for firestopping a variety of large openings, the new CFS-BL is a pre-formed solution that features an innovative “Grid-Tech” component and an improved formula which allows contractors to firestop larger openings due to the material’s greater annular space.  Featuring a pre-compressed block design, Hilti CFS-BL requires no tools for wall or floor applications and offers fire ratings 1-4 hours post installation.  This Hilti firestopping block is non-curing, making it ideal for new penetrations or re-penetrations.

In related product news, Hilti FS 658T is also being discontinued and replaced with Hilti CFS-PL, a new firestopping plug designed for small openings.  CFS-PL firestop plugs are non-curing, reusable, require no tools, and offer immediate protection after installation.

Hilti now offers more than 50 firestopping UL/ULC systems that provide ease of installation and excellent performance characteristics.  To order, request a quote, or learn more about Hilti firestopping materials, contact Ohio Service Supply for more information