Intumescent Pipe Collars

Manufactured from a high performance material bonded to the inside of a steel sleeve. Suitable for when plastic soil and waste pipes pass through fire compartment walls and floors. On exposure to heat from a fire they rapidly expand inwards to squeeze the collapsing plastic pipe until the aperture is completely sealed. Tested in accordance with the performance requirements of BS476: Part 20: 1987 & EN1366-3, NHBC Type Approval.