Bowl type cushion

Graphite ring 1.Expanded graphite sealing material 2. Withstand heavily alternating temperature and pressure 3.Size 6~1100mm

Graphite ring

The expanded graphite ring

for high temperature valve applications

Wedge-shaped or V-shaped section to withstand high pressure. 

      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

P	steam	1000 bar2	14300 psi2*
T	most 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

MediaHot water, feed water, steam,heat transfer oils, hydrocarbons and many other media.(Exception: heavily oxidizing media).

Bowl type cushion