***Discontinued*** PET Electrical Insulating Tape

General Information
***DISCONTINUED BY PERMACEL*** Please use Compare-A-Tape to locate a substitute. P255 is a 3.5 mil, polyester film, electrical insulating tape. It is intended for insulating brazed or welded connections, for coil crossover insulation and for hi-low barrier insulation. P255 fulfills requirements for outstanding non-corrosive properties and extremely high dielectric strength.
Backing Adhesive
Liner Type
PET - Polyester Rubber 3.50 mil  
Adhesion to Steel
180° Peel
Adhesive Activation Tensile Strength Elongation Percent
50.00 oz/in Pressure 50.00 lbs/in 100.00%
Min Application
Min Service
Max Short-Term
Max Long-Term
40 °F 0 °F    
Adhesive Tape Features
  • Outstanding tensile strength, edge tear and puncture resistant
  • High dielectric strength and moisture resistance are ideal for high voltage insulation or ground insulation
Adhesive Tape Applications
  • Holding winding starts & finishes & for preventing turn movement on stock wound coils
  • Holding down outer protective insulating wrap
  • Banding stick wound coils to maintain coil tightness & turn spacking
  • Insulating brazed or welded connections
  • Crossover insulation
  • Hi-low barrier insulation
Adhesive Tape Markets Served
Adhesive Tape Colors
  • Clear
Comparable products
Backing Adhesive Thickness Adhesion
 PET - Polyester   Rubber   3.50mil   50.00oz/in 

The physical properties listed are typical values and are not to be considered as specifications. Our suggestions for use are based on tests we believe to be reliable. However, the purchaser must carry out their own tests to determine the suitability of the product for their internal use. Information is given in good faith, but without warranty.

It is essential, as with all pressure-sensitive tapes, that the surface to which the tape is applied be clean, dry and free of grease and oil.

Shelf life from date of manufacture is based on the product being stored at 70°F(21°C) / 50% relative humidity out of direct sunlight.

Specification compliance is dynamic and should only be used as a general guide. Always confirm that the tape you are interested in currently complies with all specification requirements. Please verify that the product number that you select is available in the proper size and color to meet your specification.

Choose the surface energy of the exact surface that the adhesive will contact (e.g. if the part was painted metal, paint would be the surface energy).