The oval flange, code 170901, is a precision connection component used in the MAN L21/31 engine to create secure and leak-tight joints between pipes, hoses, or system interfaces operating under pressure. Its oval-shaped design allows efficient installation in confined spaces while ensuring stable load distribution and reliable sealing performance. Manufactured from high-strength, corrosion-resistant materials, the flange is engineered to withstand vibration, thermal expansion, and demanding marine or industrial operating conditions. By providing durable and accurate system connections, the oval flange contributes to safe fluid transfer, operational reliability, and long-term integrity of the engine’s piping systems.