The intumescent pipe collars are manufactured from a high performance material bonded to the inside of a steel sleeve. On exposure to heat from a fire they rapidly expand inwards to squeeze the collapsing plastic pipe until the aperture is completely sealed. We do oem for some customer , they are tested in accordance with the performance requirements of bs476: part 20: 1987. It provide 2 hour/4 hour fire resistance. The pipe collars are light and compact, easy to install, maintenance free and find uses in multi-storey office buildings, flat level developments, hospitals and hotels. Suitable for use and anywhere plastic soil and waste pipes pass through fire compartment walls and floors. Sizes available of 32mm, 55mm, 63mm, 75mm, 82mm, 90mm, 110mm, 125mm, 160mm, 200mm.
