Sikaflex 522 is a low emission 1 component Silane Terminated Polymer STP sealant adhesive It has a high weathering and mold resistance Sikaflex 522 meets highest EHS standards It bonds well to a wide range of substrates with minimal pretreatment Sikaflex 522 adheres well to a wide variety of substrates and is suitable for interior and exterior elastic sealing and bonding applications It is suitable for applications in areas of air ventilation and incidental food contact Suitable substrate materials include timber glass metals metal primers and paint coatings 2 part systems ceramic materials and plastics Weathering resistant low emission multi purpose STP sealant High ageing and weathering resistant