GTB50™ GTB50™ is a trademark of Berry Global, Inc. or one of its affiliates

Non-conductive water blocking yarn, for longitudinal water blocking of small gaps inside cables and easy to process.

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Fibre-Optic Cable

  • Easy
  • Excellent
    Water Absorption
  • Small
    Diameter Solution

Product Information



  • Longitudinal water blocking in fiber optic buffer tubes
  • General water blocking of small diameter telecom cables



Various colours

Traverse Wound Spool

Availability Yes No

Type of cable

Water Blocking Yarns


Non Conductive

Typical Properties (T = 23ºC - RH = 50%)

Description GTB50™ Test Method
Mass per Unit Length (g/100m) 20 ISO-2060
Tensile Strength (N/cm) 25 ISO-2062
Elongation (%) 14 ISO-2062
Absorption Speed (ml/g) 25 GTEST22***
Absorption Capacity (ml/g) 35 GTEST22***
Maximum Processing Temp. (°C) 230 GTEST12***
Maximum Service Temp. (°C) 150 IEC-216
Approximate Dry Diameter (mm) 0.6 GTEST23***

* Geca-Tapes Test Method

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