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.ltis mede from the high purity ofthe material (*-99%), no special corrosion protection is required. In general, Die-formed Graphite Ring has square sectionand also has V-shaped and wedge-shaped section.Die-formed Graphite Ring are suitable for high pressure sealing.