As said above the only foam alternative is blue 60
But it can't be used in gap below 10mm
https://www.firesealsdirect.co.uk/passive-fire-protection/fire-rated-foam/blue-60-fire-rated-foam-750ml/?gclid=Cj0KCQjw166aBhDEARIsAMEyZh4LXZbMNzw1IkcGUKPamksS_lvjf1e7vE2Tui9ohwd9hXQe5NP2LsUaAj_JEALw_wcB