Kestopur PL 250/20
2-component solvent-free pu-adhesive

Kestopur 250/20 is a two-component polyurethane adhesive for the gluing of metal, wood and insulation materials as well as fibre composite in sandwich panel constructions for the marine industry.

Special features

  • Good water resistance
  • Paste consistency




Kestopur PL 250/20 gives a strong, yet elastic bond. Due to its paste formula, it is ideal for trowel application on walls and ceilings. Used in conjunction with Kestopur 200/S hardener. Kestopur PL adhesives are fire classified according to IMO FTPC, Part 5 and have an MED certificate (Wheel-mark). Adhesive is compliant with Finnish Emission Classification of Building Materials (M1). Suitable for the gluing of e.g. wood, plywood, metal, PVC, EPS (Styrox®), different types of insulation materials and concrete.

Package Size Product Code
Kestopur PL 250/20 24kg/20 l T2328.020


Density/specific weight

Resin approx. 1.60 kg/dm³, Hardener approx. 1.20 kg/dm³

Lap shear strength

SS 7 N/mm² (28 d 23 °C, 50 % RH)

Tensile strength

7 N/mm² (DIN 53504)

Elongation at break

20 % (DIN 53504)


Shore D 55

Mixing ratio

6 weight part Kestopur PL 250/20 resin + 1 weight part Kestopur 200/S hardener


Resin approx. 5 million mPas, Hardener: approx. 200 mPas (Brookfield RVT 20°C)

Mixture viscosity

approx. 3 million mPas (BrookField RVT 20°C)

Mixture colour


Pot life

approx. 20 min (120 g, 20°C, 50 % RH)

Open time

max. 30 min / 20 °C


200–800 g/m² depending on materials

Pressing time

min. 2 h / 20 °C


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 and other dirt with Kiilto Cleaner 303. Stir Kestopur PL 250/20 resin first and then add the hardener and stir until the mixture is evenly coloured. Apply the adhesive on one or both sides of the materials to be bonded. Remove fresh adhesive stains with a dry cloth and clean the surfaces with Kiilto Cleaner 302, 300, acetone or other suitable solvent. Hardened adhesive can only be removed by mechanical means. We recommend gluing at room temperature. Gluing can be carried out at below room temperature (+5–10 °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.