INTUMET Intumescent Technology | Positive-Pressure Solutions for Doors | INTUMET Firestopping Solutions

INTUMET Intumescent Formulations..........Solutions for Most Specialized Needs

One of ZERO's four specialized INTUMET™ intumescent materials will most likely give you exactly the performance you need. The primary characteristics that distinguish our different INTUMET formulations are:

  • Activation temperature
  • Expansion – volume and force
  • Char – hard, or soft and fluffy
  • Capacity for continued expansion (i.e., stable char)

All INTUMET intumescent material is available in various thicknesses (millimeters or inches) and in any color as special order. All material is available in red for European specification.

Stock sizes:
Thickness.062" (1.6mm).125" (3.2mm).250" (6.4mm)
Width.375" (9.5mm).500" (12.7mm).750" (19.1mm)
 1.00" (25.4mm)1.50" (38.1mm)2.00" (50.8mm)

INTUMET Material Definitions and Physical Properties

Click on a product number for more information.
Activation Temperature450ºF (232ºC)350ºF (176ºC)250ºF (121ºC)550ºF (288ºC)
Expansion volume2-3 X6-8 X20 X80 X
Expansion pressure27 PSI
(.0187 N/mm2)
27 PSI
(.0187 N/mm2)
27 PSI
(.0187 N/mm2)
131 PSI
(.09 N/mm2)
Multi or controlled directionalxxxx
Stability after expansionExcellentVery GoodVery GoodPoor
CharVery HardHardHardSoft & Fluffy
Chemically inert /paintablexxxx
Long-life (no deterioration)xxxx
Color – standardWhiteBrownBlackSilver, Grey