Issues related to wound gaskets
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Which specific physical parameters on the gasket (such as diameter, radial width of the inner and outer rings) correspond to the DN and PN values indicated on the gasket?
DN is the nominal diameter, corresponding to the diameter； PN is the pressure rating, which should correspond to the thickness.
It can be used as long as the DN and PN of the gasket match those of the flange; of course, the material and structure must meet the requirements of the manufacturing process.
DN is the nominal diameter, while PN is the nominal pressure. DN corresponds to the inner and outer diameters of the gasket; as for PN, it depends on the standard in question, which is related to the outer diameter
Take a closer look at the HG-T20592~20635-2009 standards. Winding gaskets are designed to fit with flanges, and they must meet the requirements for flange installation. The DN size and PN pressure level must be compatible with those of the flange; otherwise, either repairs will be necessary during installation or leakage will occur after installation