The gasket consists of a wave stainless steel plate with graphite foil seal seat on both sides. The graphite layers and metallic core profile are adjusted in such a way that a wave crest overlap of 0.1 to 0.2 mm is guaranteed in restraint condition. This achieves a very low diffusion cross-section. In addition, there is also the high density of the graphite in these areas.
A very high tightness (σVU 0,01 = 22 MPa) is already achieved at very low surface stress. Further features of the gaskets are good adaptability and elastic recovery properties, blow-out safety, good stability and manageability.
Corrugated metallic gaskets have their advantage when it comes to rising and ebbing pressures and temperatures, flexible or contorted flange sealing face as well as for low surface stress.
The gaskets can be fabricated as ring, oval, elongated oval and rectangular frame.