Sikaflex 591 Multifunctional Sealant

Sikaflex®-591 is a high-performance, versatile marine sealant utilizing Sika's Silane Terminated Polymer (STP) technology. Due to its outstanding resistance to severe maritime weathering conditions, it is suitable for various applications both above and below the waterline. Sikaflex®-591 complies with the low flame spread standards (FTP Code Part 5) established by the International Maritime Organization (IMO).

• Interior and exterior sealing applications
• For use above and below waterline
• Suitable for elastic, vibration-resistant joint seals
• Overpaintable with most standard marine paints and primers (must be tested for compatibility)
• Compatible with non ferrous-metals, ceramic metals and plastics
• Excellent UV stability
• Superior weathering resistance
• Very good processing and tooling characteristics
• Bonds well to a wide variety of marine substrates
• Free of isocyanate, solvents, PVC, phthalates and tin catalysts
• Mold-resistant

Application
Sikaflex®-591 can be processed between 5 °C (41 °F) and 40 °C (104 °F) but changes in reactivity and application properties have to be considered. The optimum temperature for substrate and sealant is between 15 °C (59 °F) and 25 °C (77 °F). Sikaflex®-591 can be processed with hand, pneumatic or electric driven piston guns.

In case Sikaflex®-591 could get in contact with polyurethane ensure that those products are cured or wait at least 24 hours prior to seal.