Die-formed Graphite Rings are made of low-sulphur expanded graphite without any fillers or binders. Die-formed Graphite Ring are compressed in precise moulding tools to the required density. It is made from the high purity of the material (*-99%), no special corrosion protection is required. In general, Die-formed Graphite Ring has square section and also has V-shaped and wedge-shaped section. Die-formed Graphite Ring are suitable for high pressure sealing.