DOW CORNING p 2938863 FIRESTOP 400 INTUMESCENT ACRYLIC SEALANT WHITE 380ML TUBE p Dow Corning FIRESTOP 400 Intumescent Acrylic Sealant Dow Corning Firestop 400 is an intumescent acrylic sealant for internal applications developed to maintain the integrity of fire walls or partitions Dow Corning Firestop 400 does not emit halogenated byproducts under fire conditions MAIN USES For internal perimeter pointing around door & window frames & in joints formed where fire rated partition sections meet BENEFITS Tested to BS476 Part 22 1987 & BS476 Part 7 1987 Up to a 4 hour fire rating can be achieved Class 2 classification for surface spread of flame Mean toxicity index 20 when tested to NES713 1985 Resists mildew & mould growth 3045 minutes tack free time Good unprimed adhesion to most common construction substrates PACK SIZE 380ml &lsquoe&39 Cartridge