FZORMU-SD is a duct fibre optic cable, whose fibres are stranded around the central strength member in jelly filled tubes. A layer of E-glass yarns under the sheath work as a strength member.

This type is also known as 

  • A-DQ(ZN)B2Y (VDE 0888)
  • GRHLDV (S12)


  • Optical fibres: Coloured single-mode fibres according to the ITU-T G.652.D standard.
  • Secondary coating: Jelly filled loose tubes made of thermoplastic polymer.
  • Fillers: Black plastic fillers when applicable.
  • Central strength member: Glass fibre reinforced plastic (FRP).
  • Cable core stranding: The secondary coating tubes and fillers (when needed) are SZ-stranded around the central strength member.
  • Water blocking: Dry water blocking elements.
  • Strengt members: A layer of E-glass yarns under the sheath.
  • Rip cord: A non-metallic rip cord is applied under the sheath.
  • Outer sheath: The cable sheath consists of UV resistant black HDPE. Nominal sheath thickness is 1,2 mm.
  • Sheath marking: Marking printed on the sheath at one meter interval: Nestor Cables - cable type - lot number - year of manufacture - length marking.

All of our fibre optic and copper cables are halogen-free.

STK* Nestor code Size Diameter Weight Length Drum
0217524 L10375 1x12xSML 9 mm 64 kg/km 4000 m K12
0217525 L10376 2x12xSML 9 mm 65 kg/km 4000 m K12
0217526 L10377 4x12xSML 9 mm 65 kg/km 4000 m K12
0217527 L10378 8x12xSML 10,7 mm 100 kg/km 4000 m K14
- L19153 12x12xSML 13,7 mm 150 kg/km 4000 m K18
0217327 L11031 16x12xSML 14,0 mm 151 kg/km 4000 m K18
- - 24x12xSML 16,9 mm 217 kg/km 4000 m K20
0217328 L10502 12x2x12xSML 19,4 mm 266 kg/km 4000 m K22
0217329 L10401 18x2x12xSML 19,4 mm 274 kg/km 4000 m K22


*Clicking on these numbers will take you to the product page on the Finnish STK service.



Max. tension during installation (12-48 fibres)

3400 N

Max. tension during installation (96-192 fibres)

5000 N

Max. tension during installation (288-432 fibres)

6700 N

Crush strength with 100 mm plate

2000 N

Temperature range during operation

-45 - +70 ºC

Temperature range during installation

-15 - +60 ºC

Reaction to fire (CPR)

Minimum bending radius

Installed 10 x diameter, during installation 20 x diameter