Intertape® – Electrical adhesive tapes Intertape® 4426

Intertape® 4426 consists of a polyester film laminated with rope fiber and rubber adhesive.

Puncture resistant, absorbent polyester film / rope fibre laminated backing and aggressive rubber adhesive make this a low cost all-purpose, electrical insulating tape. Also a rubber thermosetting adhesive system gives the 4426 excellent solvent resistance.

Download datasheet


  • coil and transformer insulation wrap
  • outer-wrap for coils
  • wire pull-outs for stick wound transformers
  • lead anchoring and wrapping applications


UL-File-No.: E20780
CSA-File: LR94980

Delivery forms

  • Width: from 2.5 mm in 0.1 mm increments
  • Core diameter: 76 mm (3")
  • Special widthson request


Black, natural


Rubber thermosetting




12 months at room temperature. Adhesive tapes should be stored in a cool, dry place at approx. 20 °C and 50 - 60 % relative humidity. The storage period should not exceed 12 months.

Technical data

Property Unit of measure  
Type/ Ordering information    Intertape® 4426
Standard colours    Black, natural
Backing    Polyester film + rope fiber
Backing thickness  mm  0.101
Adhesive    Rubber thermosetting
Total thickness  mm  0.165
Elongation at break  2
Insulation resistance  MΩ  10^4
Thermal class    130 °C (B)
Dielectic strength  kV  5.5
Tensile strength  N/cm  79
Adhesiveness / Adhesion to steel  N/cm  6.6
UL FILE NO.    E20780