The graphite flange gaskets have a very low relaxation stress overtime. This technical data is measured according to DIN 52913. The test analyzes the residual load on the gaskets after 16 h at 300°C. The PLANIGRAPH LGRF gasketing material's relaxation value, shown in the technical data sheet, is 48 N/mm2 from 50 N/mm2 applied at the beginning.
The product range PLANIGRAPH offers the following styles: