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Penetration seal systems

Graphite-Based Intumescent Product

Mcr Dunastrip

  • Material base
    mcr Dunastrip is manufactured using expandable graphite.
  • Reinforcement
    The graphite is bound and reinforced with a thermally resistant compound.
  • Reaction to temperature
    The material expands under high temperatures.
  • Expansion effect
    Increases its volume at least several times over.

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Mcr Dunastrip

Expandable graphite-based intumescent material

mcr Dunastrip is manufactured from expandable graphite, bound and reinforced with a thermally resistant compound. Under high temperatures, the material expands, increasing its volume at least fifteenfold.

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Application

Sealing

  • Fire-resistant sealing of fire doors, glazed elements, fire dampers, access panels, service penetrations, steel ventilation ducts, sandwich panel joints, and other gaps

Characteristics

  • Tested in accordance with European standard EAD 350005-00-1104
  • Flexible, non-breaking material with high manufacturing quality
  • Fast and easy installation without the need for special tools
  • Rapid closure of openings at the installation point
  • Expands at least 15 times when exposed to heat
  • Resistant to water, CO₂, and UV radiation

Technical specification

Color
Anthracite
Consistency
Solid, flexible material
Bulk density
1.20 ÷ 1.35 g/cm³
Thickness
2.0 ± 0.3 mm
Expansion rate
Min. 15-fold
Expansion temperature
Approx. 180°C
Thermal conductivity
Approx. 1.2 W/mK

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