Sikaflex®-521 UV is a versatile, one-component, elastic and thixotropic sealant, whose chemical base is hybrid polyurethane. It cures on exposure to atmospheric moisture to a durable elastomer. Sikaflex®-521 UV is manufactured in accordance with the ISO 9001/14001 quality assurance system.
Advantages
– Monocomponent.
– High resistance to UV radiation and aging.
– Adheres well to a wide variety of substrates without the need for any pretreatment.
– Elastic.
– Supports painted.
– Supports sanding.
– Low odor.
– Not corrosive.
– High electrical resistance.
– Does not contain volatile organic components or solvents.
– Free of Silicone and PVC.
-White color.
Application areas Sikaflex®-521 UV adheres well to a wide variety of substrates. It is suitable for making permanent elastic seals with high adhesion resistance. Its spectrum of adhesion includes wood, metals, metallic primers and paints (two-component systems), ceramic materials and plastics. Observe the manufacturer's instructions before using on transparent materials that are prone to internal stress cracking.