Sealing plates are manufactured from expanded graphite of high purity without the use of fillers, binders, or fibrous or otherwise toxic. SINOGRAF offer covers both boards made exclusively with graphite and equipped with three types of reinforcements. Reinforcements are made of AISI 316 in the form of a mesh, perforated metal sheet and foil. These plates are widely used in the manufacture of gaskets for flange in industrial and golfball seals in internal combustion engines. Scope of the sealing plates Seals made from graphite plates can be used in temperatures from -200 ° to 650 ° C, except that water vapor may be applied only to 550 ° C in the case of oxidizing media up to 450 oC. Chemical resistance remain in the range from 0 to 14 pH. Working pressure and mounting pressure to be calculated based on the ASME Code, Section VIII, Division 1, Appendix 2 and the calculation of coefficients yi m. In this regard, please follow the instruction manual SINOGRAF "Methods for calculation of flanged joints with flat seal " In the case of exchange of used graphite gaskets, seals, if applicable exchange made of the same material with the same structure, the calculations are not necessary and permissible working pressure and tension mounting screws remain unchanged. Gaskets made of graphite plates with an inner protective ironwork combine the characteristics of flexible seals and metal, are durable and proven sealing flange joints. They are designed for use in conditions requiring high reliability and integrity.