Intertape® – Electrical adhesive tapes Intertape® 4427

Intertape® 4427 consists of a polyester film and fiber rope backing with thermosetting 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 4427 excellent solvent resistance.

Download datasheet


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 widths on request




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® 4427
Standard colours    Natural
Backing    Polyesterfilm + rope fiber
Backing thickness  mm  0.089
Adhesive    Rubber thermosetting
Total thickness  mm  0.140
Elongation at break  2
Insulation resistance  MΩ  10^4
Electrolyt. corrosion value    1.0 Direct/A, 1
Flammability class    BU 3
Thermal class    130 °C (B)
Dielectic strength  kV  4.5
Tensile strength  N/cm  70
Adhesiveness / Adhesion to steel  N/cm  6.6
UL FILE NO.    E20780