ROKU® System IWM III plus

ROKU® System IWM III plus

The ROKU® System IWM III plus consists of the high performance intumescent material „ROKU® Strip“, which is wrapped in one or more layers around the plastic pipe or the insulation. The wrap must be inserted into the annular gap flush with the surface. In the event of a fire, the intumescent material expands with high pressure and thus seals the opening hermetically against flames and smoke. For wall installations one wrap on each side of the wall and for floor installations one wrap on the underside of the floor must be provided.


  • Sealing of plastic pipes of PVC, PE or PP with max. 160 mm pipe´s outside diameter
  • Sealing of multi-layer composite pipes as e. g. Alpex Duo / F 50, Uponor MLC pipe white or aquatherm green pipe MS
  • Pipes without insulation can be insulated with max. 4 mm PE-acoustic insulation or with synthetic rubber insulation
  • Application in ROKU® MFS Combined Penetration Seal is possible
  • Can be used in shaft walls ≥ 2 x 20 mm


  • Only one product for a wide range of pipes
  • Easy and excellent usability
  • Flexibel and easy installation


Europe: ETA-15/0869, CR 13050709-3, CR 210005902

Technical data

Max. Outside diameter 160 mm
Suitable subsoils
  • Solid walls ≥ 100 mm
  • Penetration seals ≥ 2 x 50 mm
  • Drywall partitions ≥ 94 mm
  • Shaft walls ≥ 2 x 20 mm
  • Solid floors ≥ 150 mm
Suitable insulations
  • PE acoustic insulation ≤ 4 mm
  • Synthetic rubber insulation ≤ 31,5 mm
Suitable pipes
  • alpex-duo / F 50 Profi
  • aquatherm green pipe MS
  • PE
  • PP
  • PVC
  • Uponor MLC pipe white