Kestopur FP 35-25 is a 2-component, solvent-free, fire classified polyurethane adhesive that forms a very strong adhesive joint and does not contain halogenated flame retardants. Kestopur FP 35-25 is used in conjunction with Kestopur 200/S hardener. Kestopur FP adhesives have the marine industry's IMO Resolution MSC.61 (67) Part 5 fire classification tested in accordance with the 2010 FTPC, Annex 1 Part 5 and a MED certificate (so-called Rudder Mark). Adhesive has an M1-emission classification for building products. Suitable for e.g. gluing of metals, insulation materials and fiber composite. Kestopur 35-25 is ideal for automatic application.

Package Size Product Code
Kestopur FP 35-25 300 kg avok. T3834.300


Density/specific weight

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

Lap shear strength

RST 10 N/mm² (28 d 23 °C, 50% RH)

Tensile strength

10 N/mm² (DIN 53504)

Elongation at break

2% (DIN 53504)


Shore D 55

Mixing ratio

5 weight parts Kestopur FP 35-25 resin + 1 weight part Kestopur 200/S hardener


Resin: approx. 25,000 mPas, Hardener: approx. 200 mPas (Brookfield RVT 20 °C)

Mixture viscosity

approx. 15,000 mPas (Brookfield RVT 20 °C)

Mixture colour


Pot life

approx. 15 min (120 g, 20°C, 50% RH)

Open time

max. 30 min / 20 °C


100–300 g/m² depending on materials

Pressing time

Approx. 2 h / 20 °C


Unopened at +10–25 °C for 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, grease etc. dirt with a solvent or by sanding. Stir Kestopur FP 35-25 resin and add hardener by mixing properly. Apply adhesive one- or two-sided with a roller, trowel or other application tool. Remove fresh adhesive stains with a dry cloth and clean the surfaces with Kestopur Cleaner 302, acetone or xylen. Cured adhesive can be removed only 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 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 product’s suitability to the intended application.

Environment and safety

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