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Intumastic-600ml (Intumastic - 600ml)

Intumastic HP intumescent sealant

Firefly Intumastic HP is a low smoke intumescent pressure exerting mastic used to seal openings in fire rated walls and floors where passage of flame is a risk.

Used to fire rate small plastic pipes, small cable bunches with or without cable tray and plastic conduits 25 mm and 55 mm diameter, filled with cables passing through fire rated walls and floors.


As a specialist manufacturer, Doorpac manufactures a comprehensive range of Fire Rated and Solid Core doors and stockists of associated fire rated hardware, in a selection of finishes to suit a wide range of applications.