Sikaflex 552 AT

  • Elastic STP adhesive
  • 1-component adhesive
  • Bonding of large sections

Sikaflex 552 AT is an elastic 1-component Silane Terminated Polymer (STP) adhesive especially designed for bonding large components in vehicle assembly. It is suitable for bonding coated metal, GRP, ceramic materials and plastics. It bonds well to a wide range of substrates. The adhesive is produced according to the ISO 9001/14001 quality assurance system and within the framework of the "responsible care" programme.

Benefits of Sikaflex 552 AT

  • Aging and weathering-resistant.
  • Good adhesion to a wide variety of substrates without primer.
  • Isocyanate and solvent-free.
  • Capable of withstanding high dynamic stresses.
  • High elasticity and very low VOC value.
  • Can be painted.
  • Silicone and PVC-free.


Sikaflex 552 AT is suitable for joints that will be subjected to dynamic stresses. Suitable substrate materials are metals, particularly aluminum, metal primers, paint coatings, sheet steel, ceramic materials and plastics. It bonds well to a wide range of substrates with minimal pre-treatment. Seek our advice and perform tests on original substrates before using Sikaflex 552 AT on materials prone to stress cracking. Sikaflex 552 AT is suitable for experienced professional users only. Tests with actual substrates and conditions have to be performed ensuring adhesion and material compatibility.  

Product properties

Packaging: 300 ml
Colour: white or black 
Chemical base: Silane Modified Polymer (STP)
Curing mechanism: moisture curing
Resistance: very good
Processing temperature: 5 - 40°C
Skin formation time: 30 minutes
Processing time: 20 minutes
Hardness: shore A 50
Shelf life: 12 months (storage at temperature below 25°C)

For all technical properties and instructions for use, see the tecnical documentation of Sikaflex 552 AT.

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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