Heat Shrink Polyolefin Tubing
Flame Retardant, Heavy Wall, Adhesive Lined, 3:1

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HWT-FR Heat Shrink Polyolefin Tubing Product Photo

Product Description:

Grayline HWT-FR is a heavy wall 3:1 adhesive lined heat shrinkable polyolefin tubing.  The inner adhesive wall melts and fills small voids to provide a complete environmental seal against water and dirt. This product is appropriate for use in submersible and direct burial applications.

  • Standard Packaging: 4' Lengths
  • Standard Colors: Red, Black,
  • Available Options:
    • Cut Lengths
    • No adhesive lining

Specifications/Agency Ratings

  • MIL-DTL-23053/15, Class 1 or SAE-AMS-DTL-23053/15, Class 1
  • ANSI C119-1
  • Western Underground Guide 2.4, 2.5
  • IEEE 383 Vertical Flame Test
  • EU Directive 2000 / 53 / EC (ELV)
  • EU Directive 2011 / 65 / EU (RoHS2)
  • EU Directive 2015 / 863 (RoHS3)


  • Operating Temperature is -55° to 110°C
  • 3:1 Shrink Ratio
  • Shrinks at 120°C
  • Flexible
  • Creates an environmental seal
  • Accepts surface markings
  • Lead Free
  • Flame Retardant

Standard Sizes

SIZE Expanded ID
(In., Minimum)
Recovered ID
(In., Maximum)
Recovered Outer
Wall Thickness (In.)

*non-MIL-spec size., meets material performance only.

The values listed in this bulletin, to the best of our knowledge, are accurate. They are typical performance results and are not intended to be used as design data. We disclaim all liability in connection with the use of information contained herein or otherwise.

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