Intertape® – Electrical adhesive tapes Intertape® 4238

Intertape® 4238 has a laminate of polyester film and glass filaments as backing with acrylate adhesive.

Polyester film provides puncture resistance, abrasion resistance and resistance to edge tear. High tensile strength, conformable backing with aggressive adhesive for a variety of heavy duty insulating and holding applications. Very resistant to chemicals, solvents and aging, and offers excellent dielectric strength and insulation resistance.

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Lead and saddle tie down, banding and bundling motor and transformer coils and coil covering.


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








24 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 24 months.

Technical data

Property Unit of measure
Type/ Ordering information Intertape® 4238
Standard colours Transluzent
Backing Polyester film + glass filament
Backing thickness mm 0.165
Adhesive Acrylate
Total thickness mm 0.19
Dielectric strength kV 6
Dielectric constant (AC, 23 °C, 50 Hz) 2.29
Elongation at break % 7.5
Insulation resistance 10^4
Electrolyt. corrosion value Direct 1.0/A, 1
Flammability class N/A
Thermal class 155 °C (F)
Tensile strength N/cm 657
Adhesiveness / Adhesion to steel N/cm 4.9