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Graphite sealing ring
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ELT142 packing rings are molded from low-sulfur expanded graphite. They are precisely sized, with adjustable density, and contain no fillers or binders. The graphite purity is greater than 98%, eliminating the need for additional anti-corrosion treatment. Generally, the packing ring cross-section is square, but can also be wedge-shaped or V-shaped; the latter two are suitable for high-pressure applications. Molded from pure flexible graphite with a metal liner, reinforcing materials such as stainless steel foil, mesh, or others are effective. To prevent slow oxidation of the packing, a design with stainless steel end caps is necessary. Corrosion inhibitors added as sacrificial anodes effectively protect the stem and packing.Possessing all the characteristics of expanded graphite, it can withstand extreme temperature and pressure fluctuations, making it ideal packing for valves and various static seals. Except when the valve stem is severely damaged, it can be used alone or in combination with other high-carbon fiber braided packing end rings to prevent packing extrusion.

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