Stranded Single Layer FIMT

Fiber Optic Cable with Protective Stranding

Our Single-Stranded Fiber Optic Cable (RST) ensures flexibility and high mechanical performance. At the same time, the FIMT (Fiber in Metal Tube) protects the integrated optical fibers against mechanical stress, hydrogen, and other environmental influences to provide maximum optical lifetime for the application.

The solution thrives in harsh surroundings, and our Stranded Single Layer fiber optic cable performs well at Distributed Acoustic Sensing (DAS). It’s tensile and crush optimized with a flexible construction.

We manufacture our products according to the highest industry standards. We have a wide range of FIMT products, and we approach every challenge with a custom mindset to ensure we find the best solution. Contact us today if you feel like the Stranded Single Layer FIMT could be suitable for you.


Product abbreviation RST
Cable usage Data Transm. & Sensing
Total outer diameter 2.5 mm and up
Approx. Cable weight 25 kg per km and up
Filling compound H2 absorbing optionally
Max. Fiber count144 (250µm) and 192 (200µm)
Operational temperature range -60°C up to +600°C
Maximum continuous length Up to 25 km
High mechanical strength Tests acc. latest standards

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

Stranding wires


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