Kestopur 203/15
2-component solvent-free pu-adhesive

Kestopur 203/15 is a two-component polyurethane adhesive for gluing metal, wood, insulation materials and fiber composite in sandwich panels in the transportation industry.

Special features

  • Strong bond
  • Durable
  • Suitable for automatic application in multi-component systems




Kestopur 203/15 gives a strong, yet an elastic bond. Ideal for automatic application. Special characteristics of the adhesive is its tough grip on metal surfaces and lower viscosity than normally with Kestopur-adhesives. Suitable for e.g. gluing of metals, wood, insulation materials and fiber composite. Used in conjunction with Kestopur 200/S -hardener.

Package Size Product Code
Kestopur 203/15 Schütz cont T3853.996
Kestopur 203/15 kontti T3853.992
GREEN CONTENT, renewable and recycled material content

30 %



Density/specific weight

Resin: 1.6 g/cm³, Hardener: 1.2 g/cm³

Lap shear strength

SS-SS 9 N/mm², Al ≥ 5 N/mm² (28 d 23 °C, 50 % RH)

Tensile strength

7 N/mm² (DIN 53504)

Elongation at break

25 % (DIN 53504)


Shore D 50

Mixing ratio

5 weight part Kestopur 203/15 -resin + 1 weight part Kestopur 200/S -hardener


Resin: approx. 13.000 mPas, Hardener: approx. 250 mPas (Brookfield RVT +20 °C)

Mixture viscosity

approx. 5000 mPas (Brookfield RVT +20 °C)

Mixture colour


Pot life

0:20 [HH:MM] (120 g, 20°C, 50 % RH)

Open time

0:40 [HH:MM] (23 °C, RH 50 %)


150–500 g/m² depending on materials

Pressing time

2:05 [HH:MM] (23 °C, RH 50 %)


Unopened at +10–25 °C in a container (1000 l) for 6 months, in smaller containers 12 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. Stir Kestopur 203/15 -resin 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 only be removed by mechanical means. We recommend gluing at room temperature. The open time of the adhesive depends on temperature and air humidity. However, the gluing can be carried out at lower temperatures (even at +10 °C), but then the pressing time will be significantly longer and spreading properties will suffer. Higher pressing temperature will shorten the pressing time.

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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