Heatshrink Specifications

ATUM Thin Wall Heatshrink manufactured by TE Connectivity/Raychem

Locking it all together…


Semi-flexible, general purpose adhesive-lined, moisture proof heatshrinkable tubing, with a high shrink ratio. Designed to provide moisture proof sealing to a wide range of substrates such as electrical wire splices, cable jackets, wire breakouts and electrical components. 



  • Environmental sealing
  • Cable insulation
  • Connector insulation for control wiring

Technical Specifications:

  • Operating Temperature: -55°C to 110°C
  • Minimum shrink temperature: 80°C
  • Minimum full recovery temperature: 110°C
  • Shrink ratio: 3:1
  • Colour: Black
  • Adhesive lined


  • UL E85381
  • MIL-DTL-23053/4 Class 3 

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Technical Specifications:

  • Size: 19.1mm - 3/4" (0.7500)
  • Shrink ratio: 3:1
  • Material: Very flexible, flame retardant polyolefin
  • Shrink temperature: 90ºC/190ºF, a hair dryer works fine (compared to other brands that require 121ºC/250ºF)
  • Longitudinal change during shrinking:  less than 15%
  • Operating temperature:  -55ºC (-67ºF) to 135ºC (275ºF) OR up to 200ºC (392ºF) for short durations
  • UL and CSA recognized
  • MIL-23053-5 class 1 and class 3 that is over expanded to a 3:1