What is a graphite metal spiral wound gasket? A graphite metal spiral wound gasket is made by cutting or stamping improved graphite sheets, which are either pure graphite sheets or graphite sheets reinforced with metal (such as toothed plates, flat plates, or mesh). It offers many excellent sealing properties, such as thermal stability, self-lubrication, corrosion resistance, non-aging, and non-brittleness. It can be used stably for a long time in harsh working environments and requires little maintenance.

Graphite composite gaskets with high strength can be processed into several types according to application requirements: root-type graphite composite gaskets, inner-rimmed graphite composite gaskets, outer-rimmed graphite composite gaskets, and inner and outer-rimmed graphite composite gaskets. Edge-wrapped graphite composite gaskets are easy to install and disassemble, difficult to damage, and can prevent corrosion of the gasket and improve pressure resistance. The commonly used edge material is 304 or 316 stainless steel.

Non-metal gaskets (graphite gaskets) are cut from flexible graphite sheets (or sheets containing metal reinforcement). They can be divided into four types based on application requirements. Flexible graphite gaskets are made by cutting flexible graphite sheets and are used in pipe flanges, valve covers, and other applications. These gaskets are recommended for small diameters due to their low impact toughness. Another type of flexible graphite gasket has a hooked carbon steel sheet (0.2mm thick) clamped in the center of the flexible graphite sheet. It is then cut to specific dimensions and has higher impact toughness. Flexible graphite sheets bonded to both sides of a 0.2mm-thick 304 stainless steel plate have high impact toughness and are easy to transport. They can also be cut into complex shapes, making this type of gasket widely used in various industries. The application range includes various industrial pipe flanges, heat exchangers, valve covers, as well as unique-shaped flanges for liquid level meters and leveling instruments.