Dow Corning Firestop 400

Dow Corning Firestop 400 is designed for internal perimeter pointing around door and window frames, where the integrity of fire walls need to be maintained, and in the small joints formed where fire rated partition sections meet.

Dow Corning Firestop 400 Acrylic Sealant is a one-part, fire rated intumescent acrylic sealant designed for internal perimeter pointing of fire rated door and window frames, where the integrity of fire walls or partitions need to be maintained. It has good adhesion to a wide variety of substrates without the use of primer.

It has intumescent qualities which enable the material to swell under heat conditions producing a fire and smoke resistant seal. Dowsil Firestop 400 Acrylic Sealant does not emit halogenated byproducts under fire conditions.

• A fire rating of up to 2 hours can be achieved
• Class 2 surface spread of flame classification
• Mean toxicity index 2.0
• Good unprimed adhesion to most common construction substrates
• Remains flexible
• Easy to use, one-component sealant
• Resistant to ozone, ultra-violet radiation and temperature extremes

More product detail

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Product Code: AR-XL1075-380-25

A high quality general purpose intumescent sealant with acoustic properties.Tested in joints up to 50 mm wide and 4 hours fire resistance.

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