SikaFlex 221 Pu Adhesive And Sealant Flex Black

Sikaflex-221 is a one-component polyurethane adhesive and sealant for indoor joints and light bonding. It adheres to metals, primers, paints, ceramics and many plastics, forming permanently elastic, aging-resistant joints. Cures with air humidity, is paintable and sandable, non-corrosive and low-odor. ISEGA and NSF approvals for food contact. Always test on original materials for compatibility and follow Sika pre-treatment guidance. Intended for professional, experienced users. Flex Black color variant — black finish for dark surfaces and high-contrast joints. Formulation unchanged from SikaFlex 221; selected for black or dark-coloured areas.