The joint ring K 27761 is a precision sealing component designed for the distance piece K 27753 in the Sulzer ZV40/48 engine. Its main purpose is to provide a tight, reliable seal between mating parts, preventing leaks of gases or fluids during engine operation. Made from durable, heat- and pressure-resistant materials, the joint ring ensures proper function of the indicator valve assembly. Despite its small size, it plays a critical role in maintaining the integrity and efficiency of the engine’s diagnostic systems.