Flat gaskets are widely used in mechanical and apparatus engineering. Here, they are normally used to seal pipelines where the medium to be sealed can be liquid or gaseous. Flat gaskets are static seals between two flanges so, after inserting the flat gasket, the flange connection is pressed and sealed by applying surface pressure.

The use of fibres improves the mechanical properties of the flat gasket and leads to an increase in tool life as well as an improvement in overall process performance.