Metal ring gaskets are divided into two types: octagonal ring pad and elliptical pad. The metal ring gaskets are divided into two types: octagonal and elliptical.

      Octagonal ring gaskets are fitted with flange grooves, mainly for surface contact. Compared with the elliptical ring pad, although it is not easy to close with the flange groove, but can be used again, and because the section is composed of straight lines, easy processing. The elliptical ring gasket is in line contact with the flange groove and has good sealing property, but the machining precision is required to be high, thus increasing the manufacturing cost, and the elliptical ring gasket can not be reused.

      Corrosion-resistant low-hardness metal ring pad: adopt custom-made low-carbon metal materials, adjust the trace elements, change the ordinary heat treatment mode to ensure the realization of low-hardness metal ring pad. Products are widely used in petrochemical, chemical, metallurgical, refining, gas, nuclear energy, thermoelectricity and many other industries, high temperature, high pressure equipment, process pipeline static sealing parts.

      The metal blanks, which are forged and heat-treated, are machined. The gasket sealing surface is line or surface contact, and has good rigidity and strong strength. It is suitable for high pressure steam, gas, solvent and other fluids, such as: high pressure vessels, high pressure valves, ultra-high pressure reaction tower, etc. The most commonly used metal ring sheet is R series, which is divided into ellipse and octagon according to the section. There are many standards at home and abroad, but the sizes of the same ring number are basically the same, so it can be used in general. There are also enhanced RX and BX types. R series metal ring gaskets have a maximum operating pressure of 2500 PSI (17MPa), BX type can be used for 15000 PSI (100MPa) pressure level, and lens ring gaskets can be used for 300 MPa and above pressure level.