The O-ring coded K 28045 is a specialized sealing component used with flange K 28030 in the ZV40/48 diesel engine. Designed to provide a tight, leak-free seal in high-pressure and high-temperature environments, this elastomeric ring prevents oil or gas escape from the flange connection. Its flexibility, resistance to thermal expansion, and chemical durability make it indispensable for maintaining internal system pressure and preventing operational losses. As part of the engine’s sealing network, it supports overall performance and reliability.