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Vinyl Tape for Electrical Insulation No.21N/No.21 - NITTO DENKO

Environment-friendly, lead-free type vinyl tape for electrical insulation.

New materials are constantly being developed to advance the electric/electronics industry. Nitto Denko’s products are in use across the electric/electronics industry, from home appliances and AV equipment to information equipment and electronic devices/components.

20 Metre Rolls of very high quality, flexible PVC tape with uniform adhesive coating.


  • Offers excellent electrical insulation. Properties do not deteriorate after using, so it continues to provide reliable insulation.
  • Has minimal flagging, and offers reliability for wiring.
  • Easily cut by hand.
  • Excellent in low-temperature resistance and perfectly fits as adhesive strength does not deteriorate even in -10°C.
  • Superior initial adhesion.
  • Convenient for color coding of wiring with 8 color variation.
  • Individually wrapped.


  • For wiring work.
  • For identifying wiring
  • For electrical insulation in machine work.


Property Unit JIS C 2336 No.21N No.21
Adhesive strength
(to stainless steel plate)
N/10mm width 0.5 and over 1.81
15 and over 31.3 35.9
Elongation [%] 100 and over 180 215
Dielectric breakdown voltage/
Ordinary state
kV/mm 25 and over 61.2

Standard sizes:

Thickness [mm] Width [mm] Length [m] Color
0.2 19 20 Transparent, red, blue,green, yellow, white, black, gray & yellow/green.
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