FIRE GASKET is a fire rated composite vinyl intumescent accessory that provides fire-ratings for both dynamic and static joints with both concrete and fluted deck assemblies according to UL-2079 5th edition, provides 1 and 2 hour fire-ratings, and an L-rating of less than 1 CFM provides 0.5", 1” & 1.5" of unencumbered movement and is sound tested according to ASTM E90.
https://www.trim-tex.com/products/overview/code-compliance/ul-fire-rated/fire-gasket