Harsh Environment Cable (HEC)

Underground Optical Cable for Harsh Environments

Our Harsh Environment Cable (HEC) performs in the most demanding conditions imaginable. The configuration ensures maximum crush resistance and tensile strength. It functions at extreme temperatures, ranging from -60°C to +800°C (-76°F to 1472°F). 

The production process includes a hermetical seal on the inner layers, contributing an additional dimension of protection against corrosive agents. As many as 144 optical fibers can fit into a single cable, making the underground optical cable ideal for fiber optic sensing and data transmission in the most challenging environments.

underground optical cable
  • 32-Up to 114 fibers up to 144 fibers
  • 24-High Strenght extreme crush resistance
  • 12-Harsh Enviorment Harsh environment


Product abbreviation HEC
Cable usage Data Transm. & Sensing
Total outer diameter 6.35 mm (1/4”)
Approx. Cable weight 200 kg per km
Maximum fiber count 24 (250µm)
Operational temperature range -60°C up to +800°C
Maximum continuous length Up to 20 km
Ultra-High tensile strength > 20 kN
Ultra-High crush resistance Tests acc. latest standards
Cost effective steel grade mixing Wide range possible
High corrosive resistance Made of Alloy material
Perfect usage for Heavy industrie applic.

All values, product specifications and other given data are subject to change without notice to improve reliability, function, design or otherwise. Information contained in this data sheet are up-to-date as at the date of issue. As NBG cannot control or anticipate the conditions under which this product may be used, each user should review the information in specific context of the planned use. To the maximum extent permitted by law, NBG will not be responsible for damages of any nature resulting from the use or reliance upon the information contained in this data sheet.

Product overview created by Patrick Weissinger – 21.03.2019

Optical fibers

Metal tube 1

Stranding wires

Metal tubes 2-4

underground optical cable


Thomas Kozlowski

Fiber Optics Solution Specialist.
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