Kiilto A 215
Adhesive sealant

Kiilto A 215 is a fast-curing adhesive for sealing structural air leaks. The product is also suitable for bonding glass fibre or metal in projects that require high-performance, fast-curing structural adhesion. A solvent-free two-component paste. Note that this product is applied using a special tool.

Special features

  • Fast-curing, elastic, can be painted on, free from solvents and isocyanates, good chemical resistance
  • For sealing structural air leaks, airtightness ensured with dedicated tests
  • One cartridge holds enough product to produce a 5 x 5 mm seam approx. 18 metres in length approx. 20 min (23 °C/50% RH), cure time approx. 1 day
  • For indoor and outdoor use
  • Special gun and mixing nozzle required for application




Suitable for sealing uncontrolled structural air leaks and bonding glass fibre or metal in projects that require high-performance, fast-curing structural adhesion. Excellent adhesion even on concrete and wood surfaces. Elastic yet mechanically strong bond. Non-drip. Almost odourless. The product’s compatibility with other Kiilto sealing products has been ensured with various tests. Please note the dual cartridge gun and the separate mixing nozzle.

Package Size Product Code EAN Code
25 kg/20 l T2450.020 6411512450209
250 kg/200 l T2450.200 6411512450254
490 ml T2450.928 6411512450490
Application temperature




Curing through

Approx. 24 h

Density/specific weight

approx. 1.45 kg/dm³

Elongation at break

100 % (DIN 53504)


Shore A 55

Lap shear strength

- SS/SS 3.0 N/mm²

Mixing ratio

10:1 weight parts

Mixture colour

aluminium grey

Mixture viscosity

approx. 1.7 million mPas (BrookField RVT +20 °C)

Open time

approx. 20 min (23 °C, 50 % RH)

Package sizes

20 l can, 200 l container

Skin time

approx. 20 min (23 °C, 50 % RH)


Unopened at +10–25 °C for 12 months.

Temperature resistance when dry

-40–+90 °C

Tensile strength

2.8 N/mm² (DIN 53504)


2-Component silyl modified polymer


approx. 150 000 mPas (BrookField RVT +20 °C)

Instructions for use

Sealing structural air leaks: Ensure that the surfaces are dry, dust-free and free from grease and oil. When sealing structural air leaks, apply Kiilto A 215 to the joint with a dual cartridge gun and shape it with a trowel. If necessary, Kiilto Pro Keraprimer or Kiilto Pro PrimerOne may be used to prime the surface. If used in combination with Kiilto Pro Keraprimer or PrimerOne, the product cannot be used for structural adhesion of glass fibre or metal.

Industrial applications: Clean any metal and glass surfaces with Kiilto Cleaner 303 and treat them with Kiilto Primer or Kiiltoflex Metal Primer. Ensure that all materials have been pre-treated correctly and to an adequate degree before starting the actual adhesion process.

Kiiltoflex A 215 and Kiiltoflex B 615 are mixed with a weight ratio of 10:1. Apply the product onto the surfaces that you wish to seal and shape the surface e.g. with a trowel. For adhesion, apply the product onto one of the surfaces to be attached to one another and press the surfaces together. For larger surfaces, we recommend using a low pressure press, for example. Uncured adhesive can be removed with xylene or acetone. Once cured, the adhesive only be removed mechanically.

Due to its cartridge packaging, a special dual cartridge gun is required for applying this product. For example, the Sulzer/Cox ElectraFlow Dual VBE 400 MR is a good option. For more information on the cartridge gun and other options available, see detail T61 in the document bank.

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
Key Flag