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Sikaflex-292i, Multipurpose Marine Adhesive, Interior & Exterior, White

Adhesives & Sealants
SIKA

Sika is a global leader in specialty chemicals for the construction and industrial sectors. The company develops and supplies innovative products and systems for bonding, sealing, damping, reinforcing, and protecting structures. With a strong focus on sustainability and performance, Sika serves a wide range of applications including concrete production, waterproofing, roofing, flooring, and structural strengthening.

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Multipurpose adhesive for marine applications

Sikaflex-292i is a non-sag 1-component polyurethane adhesive of thixotropic, paste-like consistency which cures on exposure to atmospheric moisture. It exhibits excellent adhesive properties and a good mechanical strength. Sikaflex-292i meets the low spread of flame requirements set out by the International Maritime Organisation (IMO).  

  • Good gap-filling properties
  • Can be painted
  • Bonds well to a wide variety of substrates
  • Wheelmark approved
  • Solvent free and very low VOC
PRODUCT BENEFITS
  • Good gap-filling properties
  • Can be painted
  • Bonds well to a wide variety of substrates
  • Wheelmark approved
  • Solvent free and very low VOC
 
Usage
Sikaflex-292i is suitable for structural joints in marine constructions which will be subjected to high dynamic stresses. It is suitable to bond metals, particularly aluminium (including anodized finishes), metal primers and paint coatings (2-component systems), or ceramic materials, plastics such as GRP (unsaturated polyester resin), ABS, etc. Seek manufacturer’s advice and perform tests on original substrates before using Sikaflex-292i on materials prone to stress cracking. This product is suitable for experienced professional users only. Tests with actual substrates and conditions have to be performed ensuring adhesion and material compatibility.  
Packaging

Cartridge

300 ml

Unipack600 ml
Typical Product Data
Chemical base

1-component polyurethane

Colour (CQP001-1)

White

Cure mechanism

Moisture-curing

Density (uncured)depending on colour

1.3 kg/l

Non-sag properties (CQP061-1)

Very good

Application temperature

10 ─ 40 °C

Skin time (CQP019-1)

40 minutes A

Open time (CQP526-1)

30 minutes A

Curing speed (CQP049-1)

(see diagram 1)

Shrinkage (CQP014-1)

2 %

Shore A hardness (CQP023-1 / ISO 48-4)

40

Tensile strength (CQP036-1 / ISO 527)

3 MPa

Elongation at break (CQP036-1 / ISO 527)

400 %

Tear propagation resistance (CQP045-1 / ISO 34)

8 N/mm

Tensile lap-shear strength (CQP046-1 / ISO 4587)

2 MPa

Service temperature (CQP509-1 / CQP513-1)4 hours1 hour

-50 ─ 90 °C

120 °C

140 °C

Shelf life

12 months B

CQP = Corporate Quality ProcedureB)23 °C / 50 % r. h. C)storage below 25 °C
Technical Information
CURE MECHANISM

Sikaflex-292i cures by reaction with atmospheric moisture. At low temperatures the water content of the air is generally lower and the curing reaction proceeds somewhat slower (see diagram 1).

en_PNG_01-en-sikaflex-292i-v19-07-final

Diagram 1: Curing speed for Sikaflex-292i

CHEMICAL RESISTANCE

Sikaflex-292i is generally resistant to fresh water, seawater, diluted acids and diluted caustic solutions; temporarily resistant to fuels, mineral oils, vegetable and animal fats and oils; not resistant to organic acids, glycolic alcohol, concentrated mineral acids and caustic solutions or solvents.

Application Information
Surface Preparation

Surfaces must be clean, dry and free from grease, oil and dust. Surface treatment depends on the specific nature of the substrates and is crucial for a long lasting bond. Suggestions for surface preparation may be found on the current edition of the appropriate Sika Pre-treatment Chart.

Consider that these suggestions are based on experience and have in any case to be verified by tests on original substrates.

Application

Sikaflex-292i can be processed between 10 °C and 40 °C (climate and product) but changes in reactivity and application properties have to be considered. The optimum temperature for substrate and sealant is between 15 °C and 25 °C.
Consider that the viscosity will increase at low temperature. For easy application, condition the adhesive at ambient temperature prior to use.

 

To ensure a uniform thickness of the bondline it is recommend to apply the adhesive in form of a triangular bead (see figure 1).

01-en-triangular-bead-oval-1000

Figure 1: Recommended bead configuration

  

Sikaflex-292i can be processed with manual, pneumatic or electric driven piston guns. The open time is significantly shorter in hot and humid climate. The parts must always be installed within the open time. Never join bonding parts if the adhesive has developed a skin.

Tooling and finishing

Tooling and finishing must be carried out within the skin time of the sealant. It is recommended using Sika Tooling Agent N. Other finishing agents must be tested for suitability and compatibility prior the use.

Removal

Uncured Sikaflex-292i can be removed from tools and equipment with Sika Remover-208 or another suitable solvent. Once cured, the material can only be removed mechanically. Hands and exposed skin have to be washed immediately using Sika Cleaner-350H cleaning towels or a suitable industrial hand cleaner and water.

Do not use solvents on skin.