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BORNIT® Cold Sealing Compound

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BORNIT® Cold Sealing Compound
2-component, permanently elastic polysulfide based jointing material, can be poured-on, self-leveling, cold workable, for sealing horizontal joints in buildings, civil engineering and  roadway construction, for expansion joints up to 35% of the joint width, suitable for concrete and asphalt joints. Priming is required, depending on conditions, either with BORNIT® Concrete Primer or BORNIT® Asphalt Primer. Tested in  compliance with DIN EN 14188-2.

Color: black, grey

4 017228 000367
4 017228 000268
4 017228 000299
2,5 liters
4 liters
10 liters
4 017228 000305
4 017228 000329
4 017228 000312
2,5 liters
4 liters
10 liters
depending on joint dimension
tests / CE declaration of performance
Declaration of performance - in Annex III of Regulation (EU) No 305/2011.

BORNIT® Cold Sealing Compound, black - 2,5 liters

detailed information

Areas of application
BORNIT® Cold Sealing Compound is used for sealing horizontal joints in concrete traffic areas and cut asphalt surfaces.
BORNIT® Cold Sealing Compound reliably seals joints against the penetration of water pollutants into the ground. It is particularly suitable for sealing joints in road, bridge and tunnel construction.
BORNIT® Cold Sealing Compound is suitable for sealing floor or ground-level joints between concrete elements as well as concrete components and asphalt surfaces subject to mechanical stresses (vehicle and pedestrian traffic), chemical stresses from de-icing salts and temperature-dependent movements of the components. Upon use in concrete surfaces, BORNIT® Cold Sealing Compound can also be subjected to chemical stresses from fuels. In connection with BORNIT® Concrete or Asphalt Primer, resp., as adhesive primer and with respective structural joint design, horizontal joints of most different construction materials in civil engineering and road construction can be permanently sealed.
BORNIT® Cold Sealing Compound (self-levelling) can be used up to an inclination of the joints of max. 3 %. Joints with a higher inclination or vertical joints should be sealed with the stable BORNIT® Cold Joint Sealant. The joint sealant must not be used for joints, which are permanently under the surface of liquids (e.g. in swimming pools, clarification tanks) or are exposed to strongly oxidising acids and bases, as well as for joints in facilities for storing, filling and transhipping of water pollutants (called LAU plants).

Type and properties
BORNIT® Cold Sealing Compound is an elastic two-component, polysulphide-based joint sealant for joints with an expansibility of up to 35 % of the joint width.
It is pourable and self-levelling. In the hardened state, BORNIT® Cold Sealing Compound results in elastic joint sealing with very good resistance to weather impacts and ageing and high mechanical strength.
BORNIT® Cold Sealing Compound complies with DIN EN 14188-2.

Product advantages
• very flexible
• waterproof and UV-resistant
• Universally applicable
• Less equipment, material and labor required for processing

The joint flanks must be clean, dry, firm, and free of grease and dust. Asphalt flanks must be freshly cut. The joint widths must be matched to the expected movement.

The bonding surfaces of the joints to be sealed must be cleaned from dirt, dust, greases, oils, bitumen, loose particles, mortar residues and the like. In order to provide the correct depth and to avoid adhesion on three surfaces, the joints are clamped and backfilled with foamed PE-based round material (closed-cell round PE profile) (BORNIT® Round Cord). Should this not be possible, the joint base must be covered with a separating material (PE sheet, silicone paper or the like). The primers must be applied to dry substrate and must flash off prior to application of the sealant.

In concrete joints,
the fusion faces must be primed with BORNIT® Concrete Primer. The components A and B are thoroughly mixed and the primer is evenly applied with a brush. Following a flash-off time of 30 min to 2 hours (depending on the temperature), the sealant can be applied. BORNIT® Concrete Primer should not have completely dried off. If more than 24 hours should have passed, the primer layer must be roughened and new primer applied.


In asphalt joints,
the fusion faces must be primed with BORNIT® Asphalt Primer.nThe asphalt joints must be freshly cut, since otherwise adhesion problems occur. The components A and B are thoroughly mixed and the primer is evenly applied with a brush. Following a flash-off time of 2 to 6 hours (component temperature > +25 °C approx. 2 hours, < +10 °C approx. 6 hours), the sealant can be applied. The asphalt primer should have dried off as far as possible. It must be observed that no moisture film has formed on the primer surface due to undercutting of the dew point.
BORNIT® Cold Sealing Compound is packaged separately in various containers. The B component is added to the A component and mixed using a paddle mixer until there are no more colour streaks. In order to avoid the formation of bubbles, it must be observed that no air is mixed into the product.
The joint sealant is inserted into the joint with suitable tools (e.g. manual or compressed-air guns). It is self-levelling. Possibly ascending air bubbles must be removed within the processing time by slight smoothing the surface with a soft flat brush or smoothing stick. The temperature of the sealant prior to mixing should be min. +10 °C. The component temperature must not be below +5 °C and not above +40 °C.
Until reaching the full load-bearing capacity, a thorough hardening time of at least 48 hours at +20 °C of ground and material temperature must be complied with.

Product data in brief

Material basis Polysulphide polymer
Processing time At least 2 hours (+23 °C, 50 % humidity)
Thorough hardening Approx. 24 hours (+23 °C, 50 % humidity)
Max. admissible deformation 35 % of the joint width
Shore A hardness Approx. 15
Tensile stress Approx. 0.2 N/mm²
Colour Black, grey
Consistency Pourable, self-levelling
Consumption Depending on the joint dimension
Storage Dry, cool (below +25 °C)
Shelf life In originally sealed containers 12 months
Cleaning BORNIT® PS-Cleaner

System products
BORNIT® Round Cord
BORNIT® Concrete Primer
BORNIT® Asphalt Primer

12 months in unopened packaging at storage temperatures below +25 °C

Health and fire protection, occupational safety
For information on handling, safety and ecology, please refer to the current safety datasheet.

Forms of delivery
BORNIT® Cold Sealing Compound (pourable) components A+B packaged separately
2.5 l    can………………….    4 x 2.5 l / box    30 boxes per pallet
4.0 l    can………………….    4 x 4.0 l / box    18 boxes per pallet
  10.0 l    bucket……………...        30 pcs. per pallet

Only recycle completely empty containers. Material residues of component A + B can be disposed of according to AVV-ASN: 080409 * (adhesive and sealing compound residues containing organic solvents or other hazardous substances).

CE marking

BORNIT-Werk Aschenborn GmbH
Reichenbacher Straße 117
D-08056 Zwickau
DIN EN 14188-2:2004
System: Two-component (M) / Type: Self-levelling (sl)
Cold workable polysulphide-based joint sealant

Adhesive capacity and expansibility Tensile modulus at 100 % expansion:
at +23°C ≥ 0.15 MPA;
at -20°C ≤ 0.6 MPa
Adhesive capacity Passed at -20°C ≤ 0.6 MPa
Water impermeability Tensile modulus at 100 % expansion:
at +23°C ≥ 0.15 MPa;
at -20°C ≤ 0.6 MPa
- No failure at -20 °C ≤ 0.6 MPa
Resistance to deformation Resilience ≥ 70 %
Loss in volume ≤ 5 %
Durability of water impermeability when exposed to chemicals Passed
Durability of all mandated properties against ageing Change in the tensile modulus at 100 % expansion: ≤ ± 20 %
Flame resistance Passed


This data sheet replaces and annuls all previous technical information about the product.
The information has been compiled according to the state-of-the-art of application technology. However, please note that deviations from the operation method proposed in this data sheet may be necessary depending on the condition of the construction object. Unless agreed otherwise in individual contracts, all of the information contained in the data sheet is non-binding and therefore does not represent the agreed properties and conditions of the product. We reserve the right to make changes to the information contained in this data sheet at any time. We recommend that you take a look at our website for information concerning any changes.


Note technical rules!


Necessary information – particularly for the use and the use of our products – please refer our brochures. We are at your personal disposal.