Pyrosleeve® Cast In

Pyrosleeve® “Cast-In” fire collars are manufactured from a high impact plastic casing to house intumescent material which is activated in the event of fire, crushing the plastic pipe and sealing against the passage of flame and hot gases.

The intumescent material is unaffected by water or atmospheric influences and industrial environments, and is also resistant to dilute acids, alkalis, paints and conventional construction materials, such as gypsum, lime, cement and adhesives.