Kestopur A2S 120
2-component solvent-free pu-adhesive

Kestopur A2S 120 is a 2-component, foaming, solvent-free polyurethane adhesive for sandwich panel manufacture.

Special features

  • Low thermal value
  • Ideal for automatic ribbon spreading equipment




This foaming adhesive is purpose-designed for gluing of rock and glass wool. Suitable materials are e.g. metals, insulation materials and fiber composite. Kestopur A2S 120 resin is used in conjunction with Kestopur 200/S hardener. Suitable for manufacturing EN 13501 A2 –classified sandwich elements on continuous press lines equipped with automatic applicator for 2-component adhesives.

Package Size Product Code
Kestopur A2S 120 kontti T3785.992


Density/specific weight

Resin: 1,8 g/cm³, Hardener: 1.2 g/cm³

Lap shear strength

≥ 7 N/mm² (epoxy coated steel, 28 d 23°C, 50 % RH)

Mixing ratio

5 weight part Kestopur A2S 120 resin + 1 weight part Kestopur 200/S hardener


Resin: 22,000 mPas, Hardener: 200 mPas (Brookfield RVT 20 °C)

Pot life

2min 10 sec (42 g, 20 °C, 50 % RH)

Open time

approx. 4 min after mixing / 20 °C


200-320 g/m² depending on materials

Pressing time

Approx. 5 min / 40 °C

Calorific value

11,5 MJ/kg (EN ISO 1716)

Fire class



Can be stored in a container (1000 l) at +10–25 °C for approx. 6 months. After long storing, stir before use.

Instructions for use

The surfaces to be bonded must be clean and dry. Remove oxides by sanding, and grease etc. dirt with Kiilto Cleaner 303. The properly cleaned surface can be sanded and then primed to improve adhesion. Remove the sanding dust carefully prior to adhesive application. Kestopur A2S 120 resin must be stirred before use. Add Kestopur 200/S hardener to resin, and mix until a uniform colour is achieved. Apply the adhesive on one or both sides of the materials to be bonded. Fresh adhesive stains are removed with a dry cloth and then surfaces are cleaned with Kiilto Cleaner 303 or Kiilto Cleaner 302. Cured adhesive can be removed only by mechanical means. We recommend gluing at room temperature. Gluing can be carried out at below room temperature (even at 10 °C), but the hardening process will be slower and application may be affected

Additional information

The information given in this product data sheet is based on our tests and our practical knowledge. The technical data is defined in standard conditions. Variations in local working conditions and methods will affect the product performance and result. The result is strongly affected by working methods. We guarantee the high quality of our products according to our Quality Management System. No liability can be accepted from incorrect use of the product or prevailing conditions, over which we have no control. Thus, we cannot be held responsible for the final result. The user of the product must test the product’s suitability for the intended application.

Environment and safety

Avoid unnecessary skin contact with and exposure to the uncured product: use safety gloves. Refer to the specific material safety data sheet. Go to for more information on product and package disposal.

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