Sika Aktivator-205

Sika Aktivator-205
Sika Aktivator-205
  • Improves the adhesion of Sika
  • Short cure time
  • Easy to use

Sika Aktivator-205 is a solvent-based, colourless clear adhesion promoter which reacts with moisture and deposits active groups on the substrate. These groups act as a bonding link between substrates and primers or sealants/adhesives. Sika Aktivator-205 is designed for the treatment of bonding surfaces prior to the use of Sikaflex adhesives and sealants.

Sika Aktivator-205 is used to improve adhesion on non-porous substrates such as metals, plastics, ceramic screen prints and painted surfaces.

Features Sika Aktivator-205

  • Enhanced adhesion on various substrates.
  • Short flash-off time.
  • Easy to use.
  • Transparent.

Instructions for use

We advise to apply Aktivator on a clean and dry surface, free from all traces of grease, oil, dust and contaminents. Wipe bond faces with a clean, lint-free paper towel (moistened, not wet) with Sika Aktivator-205. Never dip the towel into the activator. Only wipe the surface with a clean side of the towel. Do not moisten the same paper towel twice and change it frequently. Caution: Sika Aktivator-205 has to be applied sparingly as excess of aktivator could lead to adhesion failure. If the pre-treated area is not bonded within the maximum flah-off time, the activation process has to be repeated (only once). Ideal application and surface temperature is between 15°C and 25°C. Consumption and method of application depends on the specific nature of the substrates. Tightly reseal container immediately after each use.

For more properties, check the technical documentation!

Product properties

Contents: 30 ml, 250 ml, 1 litre
Chemical base: solvent-based adhesion promoter
Colour: transparent
Curing mechanism: moisture curing
Specific gravity (not cured): 1.3 kg/l
Resistance: good
Application temperature: 5-40 °C
Coverage: 20 ml/m2
Flash-off time (min.): 10 minutes (23°C / 50% r.l.)
Flash-off time (max): 2 hours (23°C / 50% r.l.)
Shelf life: 12 months (stored in sealed container in up-right position in a dry place ≤ 25 °C))


We have a number of recommendations for working safely with polymers. At Polyestershoppen you will not only find the polymers themselves, but you can also purchase all the protective equipment you need from us. If you have any doubts or questions, please contact our customer service. We can give you advice on how to work safely with polymers.

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