Heat shrink tubes for special purpose with shrink ratio 3:1

type : ТТ-С нг

ТУ 2247-011-79523310-2006

  • Designed for insulation and corrosion protection of electrical connections; banding, glutinosity of cables and wires with high demands on operational reliability
  • Advanced shrink ratio 3:1 allows you to shrink tubes on the wires with mounted terminals and connectors
  • Material: special composition of the polyolefin, does not support combustion
  • Color: black
  • Resistant to UV rays and weather conditions
  • Recommended for use in high temperatures
  • Have high flexibility and durability
  • No adhesive layer ensures quick and easy disassembly
  • Packing: roll

Elongation at break point

not less than 350%

Shrinking temperature

115-140 °С

Operating temperature

-55 °C to +135 °C

Tensile strength

not less than 15 MPa

Electric durability

at least 20 kV/mm

Operating voltage

Up to 690 V

Specific volume electrical resistance

1014 Ом/cm



  • Key parameters
  • Product description
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  • Product manual
  • Quality certificate (PDF)
  • Installation tools
Name Nominal diameter (mm) Wall thickness after shrinkage (mm) The optimal range of shrinkage (mm) Packing (per roll, m)
before shrinkage after shrinkage
ТТ-С нг (3:1)-4.8/1.6   4.8 1.6 0.60 4.3 - 1.9 200
ТТ-С нг (3:1)-6/2   6 2 0.65 5.4 - 2.4 100
ТТ-С нг (3:1)-9/3   9 3 0.75 8.1 - 3.6 100
ТТ-С нг (3:1)-12/4   12 4 0.75 10.8 - 4.8 100
ТТ-С нг (3:1)-15/5   15 5 0.85 13.5 - 6.0 100
ТТ-С нг (3:1)-18/6   18 6 0.90 16.2 - 7.2 50
ТТ-С нг (3:1)-30/10   30 10 1.00 27.0 - 12.0 50
ТТ-С нг (3:1)-39/13   39 13 1.15 35.1 - 15.6 50


Special purpose heat shrink tubes ТТ-С нг - a special kind, not adhesive tubes with shrink ratio -3:1 does not support combustion. These tubes are made of a special composition of the polyolefin with the addition of non-toxic flame retardants.

As for all the other shrink-tubes, produced by “KBT” factory, tubes ТТ-С нг has typical calibrated uniform wall thickness, which is achieved through careful control of technological processes of extrusion and expanding. In addition, heat shrink tubes for special purpose have advanced shrink ratio 3:1, which allows usage on complex shapes connectors and terminals or connections with a large difference in levels.

The lack of adhesive provides the opportunity for quick and easy dismantling of the tubes ТТ-С нг (КВТ) from harnesses and bundles of wires, in case, if you need to replace one or more parts of the assembly.

Heat shrink tube ТТ-С нг (КВТ) has the property of suppressing combustion. It is environmentally friendly, harmless to humans and resistant to chemicals.

Changes in composition of the tube caused increasing of the maximum operation temperature threshold up to 135+°C. Due to these modifications, the tube also acquired a superior flexibility and increased durability.

ТТ-С нг (КВТ) tubes are recommended for installation on modern wires and cables with self-extinguishing insulation (with index "нг" and "нг LS"), taking into account high requirements to mechanical and abrasive strength. The material of the tubes is resistant to UV rays and weather conditions.

Heat shrink tubing ТТ-С нг (КВТ) available in black colour, supplied in reels and are ideal for industrial applications, suggesting cutting to the required size. The range of sizes represented in a wide range from 4.8/1.6 to 39/13mm.

Heat shrinkable tube ТТ-С нг (КВТ) is not the first year successfully used in a number of areas of the domestic industry (from light industry to the military-industrial complex), in the manufacture of electrical work, for banding and assembly of wires and anticorrosive protection of contact connections.