Die-formed expanded graphite rings are widely used as gland packings in modern process valves for higher temperatures. The development of this sealing solution started in the 1970s and is defined by the characteristics of the expanded graphite material. The distinctive material features of expanded graphite rings include: Low friction coefficient, estimated at a level of 0.1 for wet friction and 0.16 for dry friction. Remarkable chemical resistance against most process fluids, including all fluids used in energy generation. High resistance to nuclear radiation making them eminently suitable for applications in nuclear engineering.
展开▼
