What type of product is the shuangyuan SY-9900?

    The SY-9900 shuangyuan neutral silicone structural sealant is specially designed for curtain wall projects and complies with the latest national standard GB 16776-2025.

    It is a one-component, room-temperature curing product that offers both high-strength bonding and excellent sealing performance. With good elastic recovery, it can effectively absorb building displacement and vibration, meeting the structural force requirements of curtain walls.

    It has a temperature resistance range of -40°C to 150°C, is resistant to ultraviolet rays, aging, and acid and alkali corrosion, and can be exposed outdoors for a long time.

    The warranty period can reach 30 years, making it a reliable choice for high-rise curtain walls, hidden frame / semi-hidden frame systems. It bonds firmly to substrates such as glass, aluminum alloy, and steel without the need for a primer; it is suitable for structural bonding and sealing in large-scale projects such as glass curtain walls, stone curtain walls, unitized curtain walls, and sunrooms.

    The substrate must be clean, dry, and free of oil stains. The construction temperature should be between 5°C and 40°C. The surface dries in about 1-3 hours, and full curing takes 24 hours. It is sealed in packaging and should be stored in a cool and dry place. The shelf life is 12 months.