Cable Duct Sealing Kits – Filoform MDIII Water & Gas Duct Seals

Duct Seals – Filoform MDIII Water & Gas Cable Duct Sealing Kits
Cable Duct Sealing Kits
Filoform MDIII Water & Gas Duct Seals
Filoform MDIII is a watertight and gastight cable duct seal kits developed for sealing ducts internally and externally around the outside edge of the duct.
The MDIII duct seal system allows these cables to be sealed along a wall where the cable enters a building and is suitable for ducts with a diameter of 25mm up to 250mm and cables or pipes with a diameter up to 220mm.
This water and gas cable duct seal kit is specified and used by major Electrical, Gas, & Water Utility companies in the UK and Benelux countrie

Filoform MDIII Water & Gas Cable Duct Sealing Kits
Water & Gas Cable Duct Sealing Kits
Features & Benefits
- Gas and water tight cable duct seal kits (1,0bar)
- Fire resistant duct seals available with Filoform MD+
- Resistant to Hydrogen Sulphide / Methane and many other gases
- Complies with ATEX regulations for hazardous area locations and cable sealing
- WIMES Compliant, (3.02 Clause 7.4.3.2, d,e)
- Suitable for cable ducts / bore holes
- Quick and easy installation
- A complete kit for one duct
- Seals XLPE EPR PVC & PE sheathed cables, PILC, (HD) PE pipes
- Excellent mechanical strength, after curing resistant to movements, shocks and vibrations
- Suitable for cable renovations – can be installed retrospectively
- Over 25 years of operational experience
Duct Seals – Filoform MDIII Water & Gas Cable Duct Sealing Kits
Technical Specification
Duct Seal System Properties | Unit | Value |
Start time expansion | seconds | > 95 |
End time expansion | minutes | 15 |
Compressive strength | N / cm² | > 100 |
Gas and water tightness 1,0bar | 30 days | no leakage |
Density 10m 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 |
Temperature resistance | °C | +120 |
Chemical resistance | ||
0,1N Naâ‚‚SOâ‚„ | 30 days | no degradation |
0,1N NaCl | 30 days | no degradation |
0,1N Hâ‚‚SOâ‚„ | 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 |
Filoform MDIII – Product Specification
Filoform Part Ref | Cable Duct Seal Description | Maximum Duct Diameter (mm) | Maximum Cable Diameter In The Duct (mm) | Order Unit |
---|---|---|---|---|
780291 | MDIII-25 Duct Sealing Kit | Ø 25 max. | Ø 8 max Ø 70 max. Ø 70 max. . | per piece |
282550P | MDIII-50 Duct Sealing Kit | Ø 50 max. | Ø 20 max. | per piece |
282575 | MDIII-75 Duct Sealing Kit | Ø 75 max. | Ø 40 max. | per piece |
280295 | MDIII-110 Duct Sealing Kit | Ø 110 max. | Ø 80 max. | per piece |
280296 | MDIII-160 Duct Sealing Kit | Ø 160 max. | max. Ø 130 | per piece |
2802973 | MDIII-200 Duct Sealing Kit | Ø 200 max. | max. Ø 160 | per piece |
2802978 | MDIII-250 Duct Sealing Kit | Ø 250 max. | Ø 220 max. | per piece |
Filoform manufacture and supply quality products and solutions to connect, seal and protect low, medium and high voltage underground cable networks.

Filoform MDIII Duct Sealing System

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