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Kiilto XPU strong and flexible fix

Fast bonding, polyurethane-enhanced elastic adhesive sealant based on silyl modified polymer technology. For interior and exterior use. Solvent-free, does not contain isocyanates. Suitable to be used in conjunction with Kiilto one-component waterproofing membranes for sealing wall penetrations.

Special features

  • provides a fast-setting and elastic bond
  • excellent adhesion
  • For gluing and sealing of wood, metals, glass, stone, plastics etc. in interior and exterior applications
  • suitable for mobile homes and caravans


Kiilto XPU is a fast bonding, polyurethane-enhanced elastic adhesive sealant based on silyl polymer technology. Suitable for gluing and sealing of various materials (including weld lines) in structural bondings. Typical applications include truck bodies, mobile homes, buses and trains. In building Kiilto XPU is used e.g. for fixing of insulation panels, battens, washbasins and toilet seats. Suitable also to be used in conjunction with Kiilto one-component waterproofing membranes for sealing wall penetrations and for sealing Tulppa-wet room boards and inlets. Good adhesion on various stones, concrete, most metals, wood, glass and glazed surfaces as well as epoxy and polyester surfaces. With plastic and rubber preliminary adhesive tests are recommended prior to actual use. Has M1-emission classification for building products. Excellent adhesion to different materials - in most cases no need for priming. Elastic, yet mechanically strong bond. Does not contain PVC or solvents. Almost odourless. Good resistance against chemicals (weak solutions). Excellent resistance to weathering and UV-radiation. Almost non-shrinking. Paintable with most paints (test always before use). Sandable.

Package Size


Product Code

EAN Code

290 ml white T2441.926   6411512441290
600 ml white T2441.933   6411512441603
600 ml T2459.933   6411512459608
Package Size 290 ml
Color white
Product Code T2441.926
EAN Code 6411512441290
Package Size 600 ml
Color white
Product Code T2441.933
EAN Code 6411512441603
Package Size 600 ml
Product Code T2459.933
EAN Code 6411512459608


Special polymer

Density/specific weight

approx. 1.3 kg/dm³


white, black

Lap shear strength

- SS/SS 1.3 N/mm²

Tensile strength

1.6 N/mm² (DIN 53504)

Elongation at break

300 % (DIN 53504)


Shore A 30


approx. 2 million mPas (BrookField H-Path T-F/2.5 +20 °C)

Skin time

20 min (23 °C/50 % RH)

Curing through

3 mm/d, approx. 10 mm/7 d (23 °C/50 % RH)

Application temperature

+1–+40 °C

Package sizes

290 ml cartridge, 600 ml sausage

Temperature resistance when dry

-40–+90 °C


In unopened containers at +10 – 25 °C for 18 months.

Instructions for use

Materials to be used must be dust-free, dry and free from grease and oil. The best result is acheived by cleaning metal surfaces with Kiilto Cleaner 303 and then primed with Kiiltoflex Metalliprimer. The adhesive is spread on the surface and smoothed with a trowel, if needed. When gluing large uniform surfaces or surfaces in very dry conditions, we suggest light spraying with water (approx. 5–10 g/m 2 ). Close the package carefully after use. Uncured product can be removed with Kiilto Cleaner 303 or acetone. Cured product can be removed only mechanically. Prevailing conditions such as temperature, substrate’s temperature, material and humidity as well as the amount of adhesive applied have a strong impact on the skin time and drying. Therefore the given values are for guidance only.

Environment and safety

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

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