Penetration seals play a crucial role in maintaining the efficiency and safety of Heat Recovery Steam Generators (HRSGs) by ensuring gas-tightness and optimal thermal performance. DEKOMTE Expansion Joint Technology specializes in providing both metallic and fabric penetration seals tailored to meet these stringent requirements.
Metallic expansion joints are particularly advantageous for initial installations due to our cost-effectiveness and durability. They offer a suitable lifespan that aligns with the expectations of Original Equipment Manufacturers (OEMs), making them a preferred choice for new HRSG setups.

In retrofit scenarios, fabric expansion joints present significant benefits. Unlike metallic counterparts, they eliminate the necessity for pipe cutting or the delivery of split bellows, which may not accommodate movement as effectively. Fabric expansion joints provide greater flexibility, facilitating easier installation and better accommodation of thermal movements within the system.
A key aspect of an effective penetration seal system is its integrated design. DEKOMTE emphasizes that a penetration seal is not merely a membrane but a comprehensive system that manages temperature transitions from the HRSG casing to the internal piping. This holistic approach includes the design of casing insulation, liner plates, nozzle cover plates, and the penetration seal itself. Such integration ensures efficient temperature management, thereby enhancing the system’s long-term reliability.
With extensive experience in the field, DEKOMTE is adept at designing and implementing these integrated penetration seal systems. Our solutions are engineered to improve temperature control and ensure durable performance in HRSG applications, ultimately contributing to the overall efficiency and safety of power generation facilities.