Kestopur 400/4
2-component solvent-free pu-adhesive

Kestopur 400/4 is a two-component polyurethane adhesive for the gluing of metals and filter materials in the filter manufacture.

Special features

  • Oil filters
  • Solvent-free
  • Suitable for automatic application
  • Good thermal resistance




Kestopur 400/4 is a two-component, solvent-free, PU adhesive which gives a strong, yet elastic bond. Kestopur 400/4 is ideal for automatic application. Used in conjunction with Kestopur 200/S hardener. Kestopur 400/4 is suitable for the gluing of e.g. wood, paper and different types of metals and insulation materials. Adhesive's special feature is good oil resistance in higher temperatures. Recommended maximum operating temperature in continuous oil exposure is approx. 100 °C; in instantaneous oil exposure 140 °C.

Package Size Product Code
Kestopur 400/4 300 kg avok. T1184.300
Kestopur 400/4 IBC cont/1500 kg T1184.994
Kestopur 400/4 kontti T1184.992
GREEN CONTENT, renewable and recycled material content



Polyurethane adhesive

Density/specific weight

Resin: 1.6 kg/dm³ Hardener: 1.2 kg/dm³



Lap shear strength

SS-SS 10 N/mm², oil exposure (28 d 120 °C heavy fuel, colt-rolled steel ) > 3 N/mm²

Tensile strength

15 N/mm² (DIN 53504)

Elongation at break

15 % (DIN 53504)


Shore D 70

Mixing ratio

5 weight part Kestopur 400/4 resin + 1 weight part Kestopur 200/S hardener.


Resin approx. 20 000 mPas, Hardener: Approx. 200 mPas (Brookfield, RVT 20 °C)

Mixture viscosity

approx. 7000 mPas (BrookField RVT 20 °C)

Mixture colour


Pot life

approx. 4 min (20 °C, 50 % RH)

Open time

max. 7 min after mixing / 20 °C


200–600 g/m² depending on materials

Pressing time

Min. 20 min / 20 °C

Package sizes

1400 kg


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, grease and other dirt with solvent, Kiilto Cleaner 303 and/or by sanding. The properly cleaned surface can be sanded to improve adhesion. Remove the sanding dust carefully prior to adhesive application. Kestopur 400/4 resin is stirred before use. Add Kestopur 200/S hardener to the resin, and mix until a uniform colour is achieved. Apply adhesive one- or two-sided with a spreader or other application tool. Fresh adhesive stains are removed with a dry cloth and surfaces are wiped with acetone, xylene or Kiilto Cleaner 302. Cured adhesive can only be removed by mechanical means. We recommend carrying out the gluing at room temperature. However, the gluing can be carried out at lower temperatures (even at +10 °C), but then the hardening process will be significantly slower and spreading properties will suffer.

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. 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 product’s suitability to the intended application.

Environment and safety

Avoid unnecessary skin contact with and exposure to the fresh product: use safety gloves. Refer to material safety data sheet. For information on product and package disposal, visit

M1 emission classification for building material
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