The sealing ring H 21420 is a critical sealing component designed to provide a tight, leak-free interface within fluid or pressure systems of the Sulzer ASL25 engine. Built to operate reliably under fluctuating pressures, temperature changes, and vibration, this sealing ring protects internal components from leakage and contamination. Its high-quality, application-pecific material ensures long service life, stable sealing performance, and contributes directly to the safety, efficiency, and durability of the engine’s operating systems.