Neoinject PSR 1C is a single-component flexible polyurethane resin used for sealing cracks and joints in concrete structures. It reacts with moisture to form an elastomeric sealant that accommodates structural movement and provides long-lasting waterproofing. The product adheres well to both dry and damp substrates making it suitable for versatile site conditions. Applications include crack sealing in basements water tanks tunnels and sewage treatment plants where permanent flexibility is required.