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 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