ISO Self-Expanding Sealing Tape (ISO-BLOCO 300/3-5) is a high-performance sealing solution engineered for both indoor and outdoor applications. Its PU foam base enables self-expansion to fill 3~5mm gaps, delivering reliable protection against wind, dust, and rain while maintaining long-term elasticity. It also offers steam diffusion, heat insulation, and sound insulation properties. The self-adhesive design simplifies installation, and it can be painted with standard latex paint, making it compatible with various building materials like windows, metals, bricks, wood, and gypsum boards. Suitable for construction sites and all building types, it meets stringent DIN EN ISO 9001 and DIN quality standards.