The counter ring K 73026 is a precision-machined sealing and wear component used in the cooling water pump of the Sulzer ZV40/48 engine. Positioned opposite the rotating sealing elements, it provides a stable, wear-resistant contact surface that ensures reliable sealing and controlled friction during pump operation. Engineered to withstand continuous exposure to water, pressure fluctuations, and thermal cycling, this counter ring helps prevent leakage, protects adjacent components, and contributes to the long-term efficiency, reliability, and durability of the cooling water pump system.