Technical Specifications

The Firestem Pipe Collar is suitable for sealing PVC, uPVC, CPVC, Polypropylene, HDPE, MDPE, PE plastic pipes. ABS plastic pipes can be sealed up to 55mm

The Firestem Pipe Collar consists of a one part system, 1.5mm thick powder coated steel and closed by use of a toggle clip. The shells are lined with a new generation intumescent impervious to water.


The collar has 4 mounting lugs with four holes of 7mm diameter for fixing by means of metal expanding bolts with a 6mm diameter.



  • Fire tested up to 4 hours
  • Easy to install
  • Lightweight
  • Water resistant
  • Economical
  • Sizes range from 50mm up to 400mm diameter
  • Can be used in plasterboard walls.


Tested to EN1366-3 and BS476 Part 20. Should be fitted to the fire risk side, generally both sides of a wall or underside of a floor.


Like all other Firestem products the Firestem Intumescent Collars are tested by Warrington Fire Research Consultants to BS 476 part 20 and EN 1366

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