They are employed in both static and dynamic seals. Their main function is the static sealing between to parts when compressed in between.
Clearly then, it is essential for sealing gaskets to have a very good compression-set value. We achieve an excellent compression-set value through vulcanization in a steam autoclave at a pressure of 5/6 bar.
THE IMPORTANCE OF EXTERNAL SEALING GASKETS IN A FILTER
It is essential that the sealing gasket of a filter do not become dry, because it would cause dust to enter the filter. This happens when filters are kept in a stock house for a long time. To avoid this the selection of materials is fundamental; they are selected on criteria such as chemical compatibility, working temperature, pressure, lubrification, material characteristics, quality, volumes and costs.