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MDI Duct Sealing System

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Duct sealing system MD I has been developed for sealing ducts containing pliable cables such as coax and rubberised cables, which can be easily bent to a right angle.
This system allows these usually vulnerable cables to be sealed anywhere along a wall where the cable enters a building

Suitable for ducts with a diameter of 16mm up to 32mm and cables or pipes with a diameter up to 25mm

All our duct sealing systems are specified and used by major Electrical, Gas, & Water Utility companies in the UK and Benelux countries.

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  • High levels of Gas and Water tightness 
  • Resistant to Hydrogen Sulphide / Methane and many other Gases
  • Complies with ATEX regulations
  • Suitable for ducts / bore holes
  • Quick and easy installation
  • A complete kit for one duct
  • Seals all know materials, PVC & PE sheathed cables, PILC, (HD) PE pipes
  • Excellent mechanical strength, after curing resistant to movements, shocks and vibrations
  • Suitable for renovations, can be installed retrospectively
  • Over 25 years of operational experience

MDI EN

Dimensions cap

Item number Outer diameter Inner diameter Height
80221 104 mm 72 mm 30 mm
80223 132 mm 106 mm 45 mm

Specifications expanding resin

Properties Unit Value
Start time expansion seconds > 95
End time expansion minutes 15
Compressive strength N / cm² > 100
Density 0,5bar 30 days no leakage
Density 5m water column 30 days no leakage
Volume consistency cube 10 x 10cm no change
Temperature Cycles, -20°C tot +40°C 10 consecutive cycles no leakage
Vibration test 10 Hz/amplitude 3mm 240 hours no leakage
Axial tensile force diameter x 10 N no leakage
Resistance to bending cables 45° in 2 directions >250mm no leakage
Expansion polyurethane foam in pipe cm < 40
Chemical resistance    
0,1N Na₂SO₄ 30 days no degradation
0,1N NaCl 30 days no degradation
0,1N H₂SO₄ 30 days no degradation
0,1N NaOH 30 days no degradation
Diesel 30 days no degradation
Gasoline 30 days no degradation
Resistance    
Moulds   good
Rodents   good
Shelf life months minimal 30
More Information
More information

Download: MSDS safety data sheet
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