20/02/2026

Heat Shrinkable Tubing 2:1 flexible101,6/50,8 yellow
Art.-No. 309-11024 | TF21-101.6/50.8-PO-X-YE

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  • Tubing is 2:1, thin wall has quick and easy shrinking properties.
  • Electrical, mechanical and chemical properties exceed industrial standards.
  • Available in multiple colors for easy marking and handling.
Application Due to it's versatility TF21 is suitable for a wide range of applications like electrical insulations, mechanical protection and marking.
Behaviour At Low Temperature not cracking
Behaviour at Heat Shock not refractive, not fluid, not dripping
Behaviour at low Temperature test method SAE-AS23053
Brand Family TF21
Color Yellow (YE)
Description TF21 Heat Shrink is a thin wall tubing widely used for insulating, mechanical protection, strain relief, marking and bundling. Polyolefin material is quick and easy shrinking with an excellent balance of electrical, mechanical and chemical properties that exceed industrial standards. Available in a wide range of colors and diameters up to 4.0" (101.6mm) with various lengths. TF21 is UL224 125 °C 600V VW-1, CSA, SAE - AMS - DTL-23053/5 Class 1, NFF 00-608, JAR/FAR 25.853 and RoHS.
Elongation At Heat Aging 420%
Heat Aging Test 168h/175°C
Heat Aging test method SAE-AS23053
Heat Shock Test 4h/250°C
PART DESCRIPTION TF21-101.6/50.8-PO-X-YE
Packaging Type reel
Part No. 309-11024
Product family Insulation
Type TF21-101.6/50.8
For Object Outside Diameter 60.96-91.44 mm
Longitudinal Change After Shrinkage +/-5%
Printable No
Recovered Diameter (metric) 50.8mm
Shrink Ratio 2:1
Size (imperial) 4"
Supplied Diameter (metric) 101.6mm
Volume Resistance 10¹⁴ Ω cm
Wall Thickness (metric) 1.40mm
Dielectric Strength 30kV/mm
Elongation at break (min.) 400%
Elongation at break test method ASTM D638
Flammability UL 224 VW-1
Halogen Free No
Material PO-X
Material Polyolefin, cross-linked (PO-X)
Min. Shrink Temperature +220 °F (+105 °C)
Operating Temperature -67°F to +275°F (-55°C to +135°C)
REACH Conformity No
ROHS compliant Yes
Test Method Tensile Strength ASTM D638
UL File Number [Logo] E143529 [RU]
UL Recognized (US and Canada) No
UL Recognized (US) Yes
Packaging 1 - Weight (kg) 6.555kg
Pkg. Qty. 15m
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