The O-ring H 40070 is a vital sealing element used throughout the Sulzer ASL25 engine to ensure leak-free connections in fluid and pressure systems. Engineered to maintain elasticity and sealing performance under varying pressures, temperatures, and vibration levels, this O-ring prevents leakage of oil or other working fluids and protects internal components from contamination. Its application-optimized material and precise dimensional control support long service life, reliable sealing, and consistent performance in demanding marine and industrial operating environments.