Metal winding gasket manufacturing process
Metal wound gaskets, commonly referred to as spiral wound gaskets, are among the most widely used static sealing components in industrial applications. These gaskets typically consist of a metal tape with a "V" shaped cross-section and non-metallic filler material, both wound around a central core in an alternating pattern. This design provides multiple sealing functions, excellent resilience, and strong adaptability to various media and temperature conditions. They offer a wide pressure range, require low pre-load force, and can absorb vibrations and impacts, making them ideal for use in refining, chemical, thermal power, and nuclear industries.
Since their introduction in China during the early 1960s, metal wound gaskets have seen significant development. However, challenges still exist in the manufacturing process, quality control, and testing methods. Issues such as outdated production equipment, low labor efficiency, high costs, and lack of standardization across different pressure levels remain common. This article summarizes the structure, materials, and application of metal wound gaskets, with a focus on their preparation and technological evolution over time.
Static seals play a critical role in industrial systems. A failed seal can lead to material loss, environmental contamination, and even serious safety incidents. In petrochemical plants, up to 80% of unplanned maintenance is related to seal failures. As a result, there is growing demand for hydrostatic seals that minimize leakage, ensure high reliability, and provide long service life while adapting to a wide range of operating conditions.
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