Knauf Fire Caulk

Knauf Fire protection acrylic - FPA is a fire rated single component partly flexible acrylic mastic specially designed for fire sealing. The sealant expands when heated and produces an efficient 
seal against fire, smoke and gas.
Storage
Store dry in the original packaging.
Storage temperature: between 10°C and 30°C
Storage stability: 18 months stored in unopened cartridges, see imprint on cartridge for expiry date