In order to improve the efficiency of today’s wind turbines, various types of attachment parts are fixed to the rotor blades. These parts are either attached in the final step of the production process or equipped on-site. The preferred method to attach the parts is adhesive bonding as it prevents any damage to the skin of the blade.

Sikaflex® 521UV


Sikaflex®-521UV is a one component PUR Hybrid sealant based on the Sika Silane Terminated Polymer (STP) technology. The product cures on exposure to atmospheric humidity to form a durable elastomer.


Sikaflex®-521UV adheres well to a wide variety of substrates and is suitable for elastic sealing and bonding. Suitable substrate materials include timber, metals, metal primers and paint coatings (2-part systems), ceramic materials and plastics.


Product Data Sheet | Safety Data Sheet

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