20/02/2026

Heat Shrinkable Tubing 3:1 on a Reel 18/6 red
Art.-No. 308-31802 | HIS-3-18/6-PO-X-RD

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  • HIS-3 with 3:1 shrink ratio, unlined tubing is the new generation of tubing in dispenser packs fitting highly variable substrate dimensions.
  • Another great benefit of HIS-3 is that only 5 sizes cover the same range of diameters from 1mm up to 20 mm in 10 sizes of 2:1 shrink ratio tubing, thus reducing the inventory by half.
  • As completion the inbetween sizes of 9/3 + 18/6 are also available.
Application HIS-3 is used in general purpose of electrical insulation with a high level of protection against mechanical abrasion.
Behaviour At Low Temperature not cracking
Behaviour at Heat Shock not fluid, not dripping, not cracking
Behaviour at low Temperature test method UL 224
Brand Family HIS-Series
Color Red (RD)
Elongation At Heat Aging 400%
Heat Aging Test 168h/175°C
Heat Aging test method UL 224
Heat Shock Test 4h/250°C
Minimum Tensile Strength At Heat Aging 13MPa
PART DESCRIPTION HIS-3-18/6-PO-X-RD
Packaging Type pcs.
Part No. 308-31802
Product family Insulation
Short Desc. HIS is a range of three heat shrink tubing types in handy dispenser boxes. The range consists of HIS-Pack (2:1), HIS-3 (3:1) and HIS-A (adhesive lined, 3:1). With their ideal shrink ratio these products replace many differently sized tubing solutions by fitting almost any heat shrink task. The handy dispenser boxes allow for proper storage and the tubing can remain dust-free even after breaking open a package.
Type HIS-3-18/6
For Object Outside Diameter 8.62-16.48 mm
Length (metric) 4m
Longitudinal Change After Shrinkage +/-5%
Printable No
Recovered Diameter (metric) 6.0mm
Shrink Ratio 3:1
Size (imperial) 3/4"
Supplied Diameter (metric) 19.1mm
Tube Shape Flat
Volume Resistance 10¹⁴ Ω cm
Wall Thickness (metric) 0.90mm
CSA Certified Yes
Dielectric Strength 32kV/mm
Dielectric Strength test method IEC 60243
Elongation at break (min.) 800%
Elongation at break test method ASTM D2671
Flammability UL 224 VW-1
Halogen Free No
Material PO-X
Material Polyolefin, cross-linked (PO-X)
Min. Shrink Temperature +212 °F (+100 °C)
Operating Temperature -67°F to +275°F (-55°C to +135°C)
REACH Conformity No
ROHS compliant Yes
Test Method Tensile Strength ASTM D2671
UL File Number [Logo] E143529 [cRUus]
UL Listed (US and Canada) Yes
UL Recognized (US and Canada) Yes
UL Recognized (US) Yes
Volume Resistance test method UL 224
Packaging 1 - Weight (kg) 0.225kg
Pkg. Qty. 4m
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