FF360 firestop foam is dispensed from a two-component cartridge and expands up to 5x in volume during installation. It fills large, irregular openings and encapsulates dense bundles of cables and conduit efficiently. The foam stays flexible after cure for easy retrofit.
FF365 firestop sealant is a single-component caulkable sealant. It is applied with a standard caulking gun and is best suited to smaller, well-formed openings around individual pipes or conduit. It cures to a tough film.

Specifiers often combine the two on the same project: FF360 for the larger service shafts and cable tray penetrations, FF365 for the smaller, single-service openings where a caulked finish is cleaner and faster.