Kestopur V 303
2-component solvent-free pu-adhesive

Kestopur V 303 is a two-component, foaming, solvent-free, polyurethane adhesive.

Special features

  • Unfilled
  • Strong  foam building
  • Suitable for separate and spray application 




Kestopur V303 adhesive's foaming properties are designed for the gluing of EPS insulation materials and mineral wool. Suitable materials are e.g. metals, insulation materials and fibre composite. Kestopur V 303 is used in conjunction with Kestopur 200/S hardener. Suitable for manufacturing sandwich elements on continuous press lines equipped with automatic applicator for two-component adhesives.

Package Size Product Code
Kestopur V 303 200 kg/200 l T3734.200
Kestopur V 303 Schütz cont T3734.996
Kestopur V 303 kontti T3734.992


Density/specific weight

Resin: 0,97 g/cm³, Hardener: 1,2 g/cm ³

Mixing ratio

100 weight part Kestopur V 303 resin + 100 weight part Kestopur 200/S hardener


Resin: approx. 900 mPas, hardener: approx. 200 mPas (Brookfield RVT 20 °C)

Mixture colour


Pot life

Foaming starts: 23 sec (20 °C, 50 % RH)
Potlife (20 g mix): 37 sec (20 °C, 50 % RH)

Open time

max. 2 min after mixing / 20 °C


130-250 g/m² depending on materials

Pressing time

approx 2 min 30 sec / 30 °C

Calorific value

31.6 MJ/kg (EN ISO 1716)


Kestopur V 303 is stored in a tightly closed original containers at +10–25° C for 6 months (1000 l container). After long storing, stir before use. Protect from freezing.

Instructions for use

The surfaces to be bonded must be clean and dry. Remove oxides by sanding, and grease and other dirt with Kiilto Cleaner 303. The properly cleaned surface can be sanded and then primed with Kiilto Cleaning Primer to improve adhesion. Remove the sanding dust carefully prior to adhesive application. Kestopur V 303 resin must be stirred before use. Add Kestopur 200/S hardener to the 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 surfaces are wiped with Kiilto Cleaner 303 or Kiilto Cleaner 302. Hardened adhesive can only be removed 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 will affect the product performance and result. The result is also 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.