Metal O-ring seal GFD Gesellschaft für Dichtungstechnik mbH

Metal-O-rings and C-rings for extreme operating conditions

From ultrahigh vacuum up to 6800 bar (100000 psi) pressure and temperatures from -269°C cryogenic up to +980°C (-425°F up to 1800°F).
Resistant to chemicals to a large extent.

GFD metal O-rings have been developed as a secure sealing of gases and liquids. They even can be used in case of extreme conditions. These static and metallic sealing elements can be applied in ranges of ultrahigh vacuum and up to a pressure of 6800 bar. They are suitable in case of continous temperatures from 269 degrees centigrade below zero up to 980 degrees centigrade above zero and resistant to radioactive radiation, chlorides, corrosion and other aggressive influences. They neither age in use or during storage.

Advantages:
With conventional flanged joints many technical data, from which only very few are precisely available during the design state, have to be known for the calculation. Also the values for the rigidity of the flange, the screws etc. have to be available. The consequence are extensive calculations with imprecise or assumed values and the involved disadvantages. There is always a defined initial tension, no setting and smaller flange and screw dimensions with the GFD metal-O-rings or lip seals. The proof has not to be furnished with complicated and difficult calculations about unknown quantities but simply by adding the forces of pressure to the operating pressures.

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