ÖLFLEX® HEAT 180 SiZ - silicone single core for use in machine and plant construction and toolbuilding for temperatures up to +180°C, twin-core design

Separable twin conductor



Article number Conductor cross-section (mm²)Outer diameter [mm]Copper index (kg/km)Weight (kg/km)
ÖLFLEX® HEAT 180 SiZ twin conductor
2 x 0.52.1 x 4.29.617
2 x 0.752.3 x 4.614.424


  • Possesses insulating properties after combustion due to remaining SiO2 ash on the conductor

Application range

  • Areas with high ambient temperatures where conventional core insulation materials will embrittle after a short while
  • Typical fields of application
    - Control cabinet manufacturing
    - Appliances and apparatus engineering
    - Electric motor industry
    - Sauna/solarium construction
    - Thermal and heating elements
    - Lighting technology
    - Ventilator engineering
    - Air-conditioning technology
    - Furnace construction
    - Polymer processing
    - Generator and transformer manufacturing
  • ÖLFLEX® HEAT 180 SiZ is suitable as electrical sensor cable in pipe systems for modern solar hot water systems

Product features

  • Halogen-free according to IEC 60754-1
    (amount of halogen acid gas)
    Corrosiveness of combustion gases according to IEC 60754-2 (degree of acidity)
  • Flame-retardant according IEC 60332-1-2
  • Resistant to a multitude of oils, alcohols, vegetable and animal fats and chemical substances
  • Adequate ventilation must be ensured, since the mechanical properties of silicone cables decrease from +100°C in the absence of air

Product Make-up

  • Fine-wire, tinned-copper conductor
  • Silicone-based insulation
  • Colour of core insulation: red
  • Cores connected in parallel with a separating strip
  • One of the two cores is marked for identification

Classification ETIM 5

  • ETIM 5.0 Class-ID: EC000993
  • ETIM 5.0 Class-Description: Single core cable

Classification ETIM 6

  • ETIM 6.0 Class-ID: EC000993
  • ETIM 6.0 Class-Description: Single core cable

Conductor stranding

  • Fine wire acc. to VDE 0295, class 5 / IEC 60228 class 5 from 0.5 mm²

Minimum bending radius

  • Fixed installation: 6 x core diameter
    One bend at end of core:
    3 x cable diameter

Nominal voltage

  • Version SiF/GL / SiZ:
    U0/U 300/500 V
    Version FZLSi:
    10 kV

Test voltage

  • Version SiF/GL / SiZ:
    2000 V
    Version FZLSi:
    20 kV

Temperature range

  • -50 °C to +180 °C
    (adequate ventilation required)
  • Short-term: +200°C

  • Unless specified otherwise, the shown product values are nominal values. Detailed values (e.g. tolerances) are available upon request.
  • Copper price basis: EUR 150/100 kg. Refer to catalogue appendix T17 for the definition and calculation of copper-related surcharges.
  • Please find our standard lengths at: www.lappkabel.de/en/cable-standardlengths
  • Packaging size: coil ≤ 30 kg or ≤ 250 m, otherwise drum
  • Please specify the preferred type of packaging (e.g. 1 x 500 m drum or 5 x 100 m coils).
  • Photographs and graphics are not to scale and do not represent detailed images of the respective products.