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The DHW heat exchanger gasket is a sealing component that prevents leaks between the heat exchanger plates and the boiler body. Over time, gaskets can harden, crack, or compress, leading to water leaks and reduced efficiency. Replacing this gasket during maintenance or repair ensures a tight seal and reliable operation. Made from materials that withstand high temperatures and pressure, it provides a durable barrier. This gasket is a common spare part for boiler maintenance, particularly for domestic hot water systems. Whether you are a professional technician or a DIY enthusiast, this DHW heat exchanger gasket is essential for preventing water damage and maintaining performance. Always clean the mating surfaces thoroughly before installation for the best seal.