SynTape® – Electrical Adhesive Tapes SynTape® H 428/ H.20

SynTape® H 428/ H.20 is a UL approved Kapton®  adhesive tape with silicone adhesive for the highest electrical and thermal demands.

Constant, good adhesiveness over a large temperature range, high dielectric strength and smooth removal from the roll. Flame retardant according to UL 510.


Download datasheet


Masking of printed circuit board contacts when soldering with subsequent residue-free removal.


RoHS compliant according to 2011/65/EU.

Delivery forms

  • Width: From 2.5 mm, in 0.1 mm increments
  • Standard lengths: 33 m, 66 m and 100 m
  • Core diameter: 76 mm (3“)
  • Special widths on request






6 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 6 months.

Technical data

Property Unit of measure  
Type/ Ordering information    H 428/ H.20
Standard colours    brown-transparent
Backing    Kapton®
Backing thickness  mm  0.025
Adhesive    Silicone
Thermal class    180 ° C/ H
UL FILE NO.    E 178430
Flame retardant    UL 510
Total thickness  mm  0.060
Tensile strength  N/cm  45
Elongation at break  35
Adhesiveness / Adhesion to steel  N/cm  2.3
Dielectic strength  kV  6.5
Electrolyt. corrosion value    1