Hilti - 259579 - 10.1 oz tube Hilti Sealant FS-ONE Firestop
Intumescent (expands when exposed to fire) firestop sealant that helps protect combustible and non-combustible penetrations for up to 4 hours fire rating FS-ONE Fire stop sealant, high performance, intumescent. Helps to protect combustible and non-combustible penetrations for up to 4 hours fire rating. Smoke, gas and water resistant after material has cured. Contains no halogen, solvents or asbestos. High fire rating properties. Water based, easy to clean. Protects most typical fire stop penetration applications.