Hilti's CP 620 Fire Foam is a firestop foam that allows the installer to access difficult areas.

Hilti's CP 620 Fire Foam is a firestop foam that allows the installer to access through-penetrations, cable trays, cable bundles, cable runs and multiple penetrations with combustible and non-combustible pipes, though CP 620 Fire Foam must be used in conjunction with Hilti CP 645 wrap strip for combustible pipes. It is resistant to water, bacteria and gas. The foam expands up to seven times its size (unrestricted) within seconds and completely cures in one minute or less. This one-step process doesn't require additional firestop coatings or mineral-wool backfills. Hilti.