Great Stuff Foam - 340 ml - Fireblock

This fireproof foam for indoor applications features Smart Dispenser(TM) improved dispensing technology. The dispenser can be reused for up to 30 days after a first use, doesn't drip and provides better control of the foam spray. This lets you precisely fill cracks and gaps that could potentially spread fire and smoke. In addition, the foam can seal electrical wires running through wall studs, creating an airtight and water-resistant seal. Finally, the orange finish of the foam allows quick identification when needed.