The chemical production environment imposes extreme demands on sealing components, whose performance directly impacts production safety, environmental compliance, and operational efficiency. Core challenges include medium corrosiveness, significant fluctuations in temperature and pressure, and long-term stability. Key Technical Requirements: Corrosion-Resistant Material Systems: Selection of materials such as perfluoroelastomer, modified PTFE, and specialty hydrogenated nitrile rubber based on specific media (acids, alkalis, solvents, etc.). Precision Structural Design: Utilization of multi-lip designs, spring-energized structures, and other configurations to compensate for wear and adapt to thermal cycling variations exceeding ±20°C. Surface Treatment Processes: Technologies like plasma spraying and laser micro-texturing can reduce the friction coefficient by over 40% and minimize dynamic leakage. Typical Application Scenarios: Mechanical sealing systems for reaction vessels (withstand pressure ≥5 MPa, temperature range -50°C to 280°C) Static seals for highly corrosive pumps and valves (resistant to media such as 98% concentrated sulfuric acid and mixed acids) Pipeline flange seals (compliant with GB/T 9129 Class 150–2500 standards) Industry Development Trends: Intelligent sealing systems are integrating micro-sensors for real-time monitoring of seal status and leakage early warning. Eco-friendly sealing materials are gradually replacing formulations containing heavy metals. Full lifecycle sealing solutions are becoming standard for large-scale chemical installations, with the potential to reduce unplanned downtime by over 60%. Sealing technology in the chemical industry is evolving from mere "components" to "critical functional systems."