石戒指

Graphite ring Expanded graphite ring for high temperature valve applications Graphite ring is characterised by a high level of chemical resistance and thermal stability as well as excellent sealing effect and constant elasticity.Regardless of temperature cycle this material is not subject to cold flow, shrinkage or ageing.Graphite ring fulfils the purity requirements for seals in nuclear power station valves (content of soluble chlorides < 20ppm). Also available with corrosion inhibitor. Application Limits Psteam 1000 bar2 14300 psi2* Tmost media and air -200..+550°C1 -328..+1022°F1 steam -200..+700°C2-328..+1292°F2 inert gas -200..+2550°C3-328..+4532°F3 pH 0.. 14 0.. 14 Media Hot water, feed water, steam, heat transfer oils, hydrocarbons and many other media. (Exception: heavily oxidizing media).