tesa ® 61250

50µm double sided black chemical resistant filmic tape

Product description

tesa ® 61250 is a double sided self-adhesive tape consisting of a black PET backing and a special chemical resistant adhesive.

tesa ® 61250 features especially:
  • Excellent chemical resistance to different polar and non polar chemicals
  • Excellent shock resistance
  • Excellent converting performance due to PET backing
  • Double PET liner
  • Halogen-freeness
  • Skin-compatible (ISO 10993-10:2010; ISO 10993-5:2009)

Main applications

  • Cover glass mounting in wearable devices
  • Mounting of parts in electronic devices, e.g. keyboard mounting or earphones

Technical properties

Backing material

PET film



Total thickness

50 µm

Type of adhesive


Elongation at break

50 %

Tensile strength

20 N/cm

Weight of liner

72 g/m²

Type of liner - inside


Type of liner - outside


Thickness of liner - inside

50 µm

Thickness of liner - outside

50 µm

Colour of liner - inside


Colour of liner - outside


Adhesion properties

Adhesion to Aluminium (after 14 days)

8 N/cm

Adhesion to Aluminium (initial)

7 N/cm

Adhesion to Glass (after 14 days)

9.2 N/cm

Adhesion to Glass (initial)

8.3 N/cm

Adhesion to PC (after 14 days)

12.5 N/cm

Adhesion to PC (initial)

7.9 N/cm

Adhesion to PE (after 14 days)

4 N/cm

Adhesion to PE (initial)

2 N/cm

Adhesion to Steel (after 14 days)

9.1 N/cm

Adhesion to Steel (initial)

7.9 N/cm

Rating properties

Temperature resistance short term

120 °C

Temperature resistance long term

70 °C



Humidity resistance


Resistance to chemicals


tesa® products prove their impressive quality day in, day out in demanding conditions and are regularly subjected to strict controls. All technical information and data above mentioned are provided to the best of our knowledge on the basis of our practical experience. They shall be considered as average values and are not appropriate for a specification. Therefore tesa SE can make no warranties, expressed or implied, including, but not limited to any implied warranty of merchantability or fitness for a particular purpose. The user is responsible for determining whether the tesa® product is fit for a particular purpose and suitable for the user’s method of application. If you are in any doubt, our technical staff will be glad to support you.

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