This standard specifies the shape and dimensions of soft gaskets for marine flanges. This standard applies to soft gaskets for flanges with a nominal pressure of no more than 6.4 MPa and a nominal diameter of 10 to 2000 mm in ship pipelines.
GB/T 2502-1989 history
2017GB/T 17727-2017 Nonmetal material gaskets for marine flange
2008GB/T 17727-2008 Nonmetal material gaskets for marine flange