Sika PU sealant Sikaflex 521UV black

Sikaflex®-521 UV is a weather-resistant, 1-component adhesive/sealant based on silane-terminated polymer (STP) with broad adhesion properties. The product adheres well to metal surfaces, ABS, PC, fiberglass, and wood surfaces, most often without the need for special adhesion treatments. This versatile product is suitable for both interior and exterior sealing applications.  

PRODUCT BENEFITS
Weather- and aging-resistant
Adheres well to many different material surfaces without the need for special adhesion treatments
Contains no isocyanates or solvents
Paintable
Can be sanded
Mild odor

Sikaflex®-521 UV adheres well to many different material surfaces for sealing and bonding. Suitable material surfaces include wood, metals, metal primers and paint coatings (2-component systems), ceramics, and plastics. This versatile product is suitable for interior and exterior sealing applications. Follow the manufacturer’s instructions and carry out preliminary tests on original materials before using Sikaflex®-521 UV on plastic surfaces that are prone to stress cracking. This product is intended for professional use only. The product must be tested on actual material surfaces and under real application conditions to ensure adhesion and compatibility.