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Sumitomo General Purpose Heat Shrink Products



SUMITUBE B2 is used in insulation, protection and reinforcement for termination, and joints of electric wire. It is also used for color identification, bundling electric wires, and insulation and protection of resistors and capacitors.

Sumitube B2 Specifications:

  • Material: Irradiated cross-linked flexible polyolefin
  • Shrink Temperature: min 90°C
  • Shrink Ratio:2:1
  • Temperature Range:-55°C to 135°C
  • Longitudinal Change:0 ± 5%
  • Size Range: 3/64” to 4”


  • Color: black, brown, red, orange, yellow, green, blue, purple, gray, white, yellow/green striped for limited sizes
  • SAE-AMS-DTL-23053/5 Class 1
  • UL/CSA Recognized
  • Environmental Compliance: RoHS, ELV
  • Flexible


  • Automotive
  • Military
  • Aerospace
  • Construction Machinery
  • Industrial Machinery
  • Electronics

Sumitube B2 crosses with Tyco Raychem RNF-100

SUMITUBE™ is a registered trademark of Sumitomo Electric Industries, Ltd