Sikaflex-521UV Polyurethane Weatherproof Sealant

Sika Sikaflex-521UV Multi-Purpose One-Component Modified Polyurethane Sealant

This product is a multi-purpose, one-component modified polyurethane sealant that is non-sagging, cures with moisture, and forms a durable elastomer. The UV-resistant sealant Sikaflex-521UV offers excellent weather resistance, resists weathering, and is less prone to cracking and carbonization. Particularly, the white variant does not yellow easily, making it the preferred choice for outdoor high-end electrical cabinets, wind power generation, premium RVs, and external sealing of yachts. Sikaflex-521UV is manufactured in accordance with the ISO9001/14001 quality assurance systems.    

Product Features:        

One-component-         

Elastic-         

UV resistant, weather and aging resistant-         

Wide bonding range, no special pretreatment required-         

Paintable         

Sandalble-         

Low odor-        

Non-corrosive-         

High electrical resistance-         

VOC-free, solvent-free-         

Silicone-free, PVC-free