Your cookie settings for

We use cookies and other technologies (incl. 3rd party services) to offer you website features, to understand the usage and to optimize our offering as well as providing you with individualized offers and ads. For more information, check out our privacy policy and our cookie policy, where you can change your cookie settings at any time.

Change settings
Adjust your privacy settings for
Required Cookies

Absolutely necessary to ensure that you can use the site, e.g.

  • Store your privacy settings and language preferences
  • Session handling
  • Website-Login
  • Shopping basket
Functional & Performance Cookies

Recommended to use the site optimally, e.g.

  • Search history
  • Website-analytics
  • Individual recommendation of offers and content within our site
  • Testing new features
Advertising Cookies

Services which offer extended analysis of usage behaviour within and outside of our website.

  • Advertising services & trackers
  • Social network integration
Product information

tesa HAF® 8402

125µm amber reactive HAF mounting tape

Product description

tesa HAF® 8402 is a reactive heat activated film based on phenolic resin and nitrile rubber. This amber double sided tape has no backing. It is protected by a strong paper liner and can easily be slit and die cut.

At room temperature tesa HAF® 8402 is not tacky. It is activated for pre-lamination by heat and starts to become tacky at 90 °C. In a second application step heat and pressure is applied over a certain period of time.

After curing tesa HAF® 8402 reaches:

  • Very high bonding strength
  • High temperature resistance
  • Excellent chemical resistance
  • Bonds remain flexible and elastic

Main applications

It is suitable for bonding of all thermal resistant materials such as metal, glass, plastic, wood and textiles.

  • High-strength splicing (overlap splice)
  • Structural bonding
  • Magnet bonding in electric motors
  • Friction liners for clutches

Additional Info

tesa HAF® 8402 is laminated before curing. For this process we recommend a temperature between 120 °C and 140 °C.
2. Bonding:
The bonding conditions temperature, pressure and time depend on the application. Following parameters can be regarded as a guideline:

Splicing application:
  • Temperature: 120-220 °C
  • Pressure: >2bar
  • Time: 15 – 90 s.
Friction liners for clutches:
  • Temperature: 180 – 230 °C
  • Pressure: > 8 bar
  • Time: 3 min – 30 min
Magnet bonding:
  • Temperature: 140 – 180 °C
  • Pressure > 6-10 bar
  • Time: 2 min - 5 min
Structural bonding:
  • Temperature: 180 – 220 °C
  • Pressure: > 10-15 bar
  • Time: > 3 - 30 min

Bonding strength values were obtained under standard laboratory conditions. Value is guaranteed clearance limit checked with each production batch (Material: Etched aluminium test specimen / Bonding conditions: Temp. = 120 °C; p = 10 bar; t = 8

To reach maximum bonding strength surfaces should be clean and dry. Storage conditions according to tesa HAF® shelf life concept.




Technical properties

Bonding strength

12 N/mm²

Shelf life time (packed) < 15°C

15 months

Type of adhesive

nitrile rubber / phenolic resin

Total thickness

125 µm

Backing material


Shelf life time (packed) < 25°C

12 months

Type of liner


Shelf life time (packed) < 5°C

18 months



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.

Related products