Sikaflex®-290 DC PRO is a one-component polyurethane-based joint sealing compound specifically formulated for caulking joints in traditional timber marine decking. It exhibits excellent weathering resistance, making it well-suited for highly exposed open joints within the maritime environment. The sealing compound cures to form a flexible elastomer, allowing for a fast and easy sanding process. Sikaflex®-290 DC PRO meets the requirements set out by the International Maritime Organisation (IMO).
- Excellent weathering resistance
- Robust and durable
- Easy and fast sandable
- Ideal flow behavior for application
- Long toolability
- Resistant to seawater and fresh water
Technical Specifications:
- Chemical Base: 1-component polyurethane
- Color: Black
- Cure Mechanism: Moisture-curing
- Density (uncured): 1.3 kg/l
- Application Temperature: 5 – 35 °C (41 – 95 °F)
- Skin Time: 90 minutes at 23 °C (73 °F) and 50% relative humidity
- Curing Speed: Varies with temperature and humidity; refer to product data sheet for detailed information
- Shrinkage: 3%
- Shore A Hardness: 40
- Tensile Strength: 3 MPa (430 psi)
- Elongation at Break: 600%
- Tear Propagation Resistance: 10 N/mm (55 pli)
- Service Temperature: -50 – 90 °C (-58 – 194 °F)
- Shelf Life: 12 months when stored below 25 °C (77 °F)
Materials: Polyurethane
Dimensions: Available in various packaging sizes, including 600 ml Unipack, 300 ml Cartridge, 1000 ml Unipack, 23 l Pail, and 195 l Drum
Compatibility Information:
- Surface Preparation: Surfaces must be clean, dry, and free from grease, oil, and dust. For timber substrates, the use of an appropriate primer, such as Sika® Primer-290 DC, is mandatory.
- Application: Sikaflex®-290 DC PRO can be processed between 5 °C and 35 °C (41 °F and 95 °F). The optimum processing temperature is between 15 °C and 25 °C (59 °F and 77 °F).
- Chemical Resistance: Offers effective long-term resistance to fresh water, seawater, and mild aqueous cleaning agents. Not resistant to solvents, acids, caustic solutions, and chlorine-containing cleaners. Brief contact with fuels or lubricants has no significant effect on durability.
