The disc, code 100100, is a versatile precision component used within various mechanical and fluid-handling systems of the MAN L21/31 engine. Depending on its application, the disc may serve as a sealing element, support surface, flow-control component, or structural spacer within rotating or stationary assemblies. Engineered for dimensional accuracy and operational durability, it is manufactured from high-strength and wear-resistant materials capable of withstanding pressure, vibration, and thermal stress under demanding marine and industrial conditions. Its reliable function contributes to stable mechanical performance, controlled system operation, and the long-term reliability of critical engine assemblies.