Sikaflex 591 sealant

  • For interior and exterior
  • High weather resistance
  • Permanently elastic

Universal adhesive and sealant for exterior and interior use.

Sikaflex 591 is a multifunctional sealant based on Sika's Silane Terminated Polymer (STP). With it's excellent resistance against the harsh marine weathering conditions, it can be used for a wide range of applications. The sealant is easy to use and adheres well to the most common substrates in the maritime industry.

Sikaflex 591 exceeds common environmental and safety standards and sets a new benchmark from an ecological point of view. Sikaflex® 591 meets the low spread flame requirements (FTP Code Part 5) set out by the International Maritime Organization (IMO).

Benefits of Sikaflex 591

  • Exceeds EH&S standards.
  • Excellent weather resistance.
  • Free of isocyanate, solvents, PVC, phthalates and tin catalysts.
  • Bonds well to a wide variety of marine substrates.
  • Highly elastic.
  • Very good processing and tooling characteristics.
  • Can be painted.
  • IMO approved.

Product properties 

Packaging: 310 ml
Colour: white, steel grey, black
Chemical base: silane modified polymer
Cure mechanism: moisture curing
Non-sag properties: very good
Application temperature: 5-40 °C
Skin time: 45 minutes
Open time: 20 minutes
Shore A hardness: 45
Service temperature: -50-80°C
Shelf life: 12 months (storage below 25°C)

For all technical properties and instructions for use please check Sika 591 technical documentation.

We have a number of recommendations for working safely with polymers. At Polyestershoppen you will not only find the polymers themselves, but you can also purchase all the protective equipment you need from us. If you have any doubts or questions, please contact our customer service. We can give you advice on how to work safely with polymers.

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