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Dunbar® 2:1 Polyolefin Single Wall Flexible Heat Shrink

Specification / Designation: M23053/5 Class 1 | Flame Retardant

Dunbar® 2:1 Polyolefin Single Wall Flexible Heat Shrink Features

  • Low Temperature Printable – Thermal Transfer or Hot Stamp
  • Shrink ratio: 50% or more in the radial direction, 7% or less in the axial direction
  • Continuous operating temperature: - 55°C to 135°C
  • Flammability: UL VW-1, CSA OFT, -F-MARK (except clear)
  • Highly heat-resistance
  • High resistance to chemicals and oils
  • UL Compliant: UL 224 (File Number: E319303)
  • MIL-DTL-23053/5 Class
  • RoHS Compliant


M23053/5 Class 1 2:1 Shrink Ratio, Flexible, Flame-Retardant, Polyolefin Tubing Applications MIL-DTL-23053/5 C1 is a flexible, flame-retardant heat shrinkable polyolefin tube.  This Dunbar® single wall heat shrink tubing is designed for a wide range of applications requiring high heat-resistance, including insulation for electric & electronic device.

Are we missing the specification you need? Please go to our Contact Us page and submit your question to us, or call 1-877-284-7760

Property Test Method Value Physical Unaged Tensile strength ASTM D 2671 Min. 1.06 kgf/mm2 (1,500 psi) Elongation Min. 200% Aged Tensile strength 175°C/168 hrs Min. 0.8 kgf/ mm2 (1,000 psi) Elongation Min. 100% Deformation 158°C/1 hr Max. 50% Heat shock 250°C/4 hrs No crack Cold bend - 55°C/4 hrs No crack Flexibility 158°C/168 hrs No crack Secant modulus - Max. 17.59 kgf/mm2 (25,000 psi) Specific gravity ASTM D 2671 1.5 max. Electrical Dielectric strength ASTM D 149 Min. 20kV/1 minute Volume resistivity - Min. 1014 - cm Chemical Copper corrosion 175°C/16 hrs No corrosion Copper stability 158°C/168 hrs No sign of degradation Fungus resistance ASTM G 21 No growth Flammability UL VW-1 ASTM D 2671 Pass – self extinguishing

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M23053/5 Class 1 2:1 Shrink Ratio, Flexible, Flame-Retardant, Polyolefin Tubing Applications MIL-DTL-23053/5 C1 is a flexible, flame-retardant heat shrinkable polyolefin tube.  This Dunbar® single wall heat shrink tubing is designed for a wide range of applications requiring high heat-resistance, including insulation for electric & electronic device.

Product Specifications

Are we missing the specification you need? Please go to our Contact Us page and submit your question to us, or call 1-877-284-7760

Property Test Method Value Physical Unaged Tensile strength ASTM D 2671 Min. 1.06 kgf/mm2 (1,500 psi) Elongation Min. 200% Aged Tensile strength 175°C/168 hrs Min. 0.8 kgf/ mm2 (1,000 psi) Elongation Min. 100% Deformation 158°C/1 hr Max. 50% Heat shock 250°C/4 hrs No crack Cold bend - 55°C/4 hrs No crack Flexibility 158°C/168 hrs No crack Secant modulus - Max. 17.59 kgf/mm2 (25,000 psi) Specific gravity ASTM D 2671 1.5 max. Electrical Dielectric strength ASTM D 149 Min. 20kV/1 minute Volume resistivity - Min. 1014 - cm Chemical Copper corrosion 175°C/16 hrs No corrosion Copper stability 158°C/168 hrs No sign of degradation Fungus resistance ASTM G 21 No growth Flammability UL VW-1 ASTM D 2671 Pass – self extinguishing

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