The O-ring, code 06.56936-2988.0, is a compact yet critical sealing element used throughout the MAN L21/31 engine to ensure leak-free operation across various systems. Designed with a precisely defined elastic profile, it compresses within its groove to create an effective seal against fluid leakage and contamination ingress under varying pressure and temperature conditions. Manufactured from high-performance elastomer materials resistant to heat, oil, and chemical exposure, it maintains its flexibility and sealing integrity over extended service periods. By protecting internal systems and reducing maintenance requirements, this O-ring plays a key role in ensuring operational safety, efficiency, and long-term reliability of the engine.
The cover, code 11.41188-0009-1.A, is a protective and sealing component designed to enclose and safeguard functional sections of the MAN L21/31 engine. Precisely machined for accurate fit and reliable sealing, it prevents the ingress of contaminants such as dust, moisture, and salt particles, while ensuring that internal media remain securely contained. In addition to its protective function, the cover contributes to structural rigidity and helps reduce noise and vibration levels within the engine. Constructed from durable materials with corrosion-resistant properties, it provides long service life and dependable performance in demanding marine and industrial operating environments.
The lockring, code 06.29020-0202.0, is a precision retaining element designed to secure components in position within the MAN L21/31 engine assembly. Installed in designated grooves, it provides reliable axial retention, preventing movement of rotating or stationary parts under vibration, thermal expansion, and dynamic loads. Manufactured from high-strength spring steel and engineered for exact dimensional fit, the lockring ensures long-term stability and safe operation of critical assemblies. Its simple yet highly effective design enables quick installation and removal during maintenance, making it an essential component for maintaining alignment, structural integrity, and operational reliability in marine and power-generation applications.
The O-ring K 73137 is a precision elastomer sealing component used in bearing housing K 73111 within the Sulzer ZV40/48 raw water pump assembly. Its function is to provide a static seal between mating surfaces, preventing leakage of fluids and ingress of contaminants. Designed to maintain elasticity and sealing integrity under temperature changes, pressure variations, and vibration, this O-ring ensures consistent sealing performance over long service intervals. Its accurate fit and durable material properties support system integrity, protect internal components, and contribute to the efficient and reliable operation of the pump and overall engine cooling system.
The shaft seal K 73128 is an essential sealing element designed for installation in bearing housing K 73111 of the Sulzer ZV40/48 raw water pump assembly. Its primary function is to prevent the ingress of water and contaminants into the bearing area while retaining lubrication within the housing. Designed for continuous operation under rotating motion, pressure fluctuations, and exposure to moisture, this seal maintains reliable sealing performance and protects sensitive bearing components from premature wear. Manufactured with precision and durable sealing materials, the K 73128 shaft seal contributes to extended bearing life, reduced maintenance, and overall operational reliability of the pump system.
The mechanical seal K 73127 is a critical sealing component in the raw water pump of the Sulzer ZV40/48 engine, designed to prevent leakage along the rotating shaft while maintaining stable pump operation. Engineered to operate under continuous exposure to water, pressure variations, and shaft rotation, this seal provides a reliable barrier between rotating and stationary parts. Its precision-machined sealing faces and high-quality materials ensure low friction, reduced wear, and long service life. By maintaining tight sealing under demanding marine and industrial conditions, the K 73127 mechanical seal plays a key role in protecting pump components, preventing water ingress, and ensuring efficient and uninterrupted cooling performance.