Graphite packings
Expanded graphite is one of the best materials for manufacturing dynamic sealings. Its heat resistance ranges from – 200 °C to + 2000 °C. Unfortunately its heat resistance decreases in the effect of air, steam and other oxidants. It is therefore assumed that good brands of expanded graphite can be used in the air up to 450 °C, in dynamic applications up to 550 °C, and in static applications, e.g. in valves, up to 600 °C.
Expanded graphite features very good chemical resistance to practically all media, with the exception of strong oxidants; good thermal conductivity and low friction coeffi cient for steel.
605 | parameter | functional parameters | Description | |||
|---|---|---|---|---|---|---|
 |  |  |
Packing made of expanded pure graphite yarn with a cotton core. | |||
| T max [⁰C] | -200 to 450 steam 500 / oxygen-free 2000 | |||||
| P max [bar] | 40 | — | 200 | |||
| V max [m/s] | 40 | — | 2 | |||
| PH | 0- 14 | Dimension range | 6- 25 mm | |||
6051 | parameter | functional parameters | Description | |||
| | |
Packing of expanded pure graphite yarn reinforced with a thin inconel wire. | |||
| T max [⁰C] | -200 to 650 oxygen-free 2000 | |||||
| P max [bar] | — | — | 320 | |||
| V max [m/s] | — | — | 2 | |||
| PH | 0 – 14 | Dimension range | 6- 25 mm | |||
6055 | parameter | functional parameters | Description | |||
| | |
Packing of expanded pure graphite yarn reinforced with thin inconel wire, with each single thread over-braided with inconel mesh. | |||
| T max [⁰C] | -200 to 650 oxygen-free 2000 | |||||
| P max [bar] | — | — | 600 | |||
| V max [m/s] | — | — | 1.5 | |||
| PH | 0 – 14 | Dimension range | 6- 25 mm | |||
645 | parameter | functional parameters | Description | |||
| | |
Packing of expanded pure graphite yarn with cotton core, additionally impregnated with PTFE. | |||
| T max [⁰C] | – 200 to 280 | |||||
| P max [bar] | 25 | — | 100 | |||
| V max [m/s] | 25 | — | 2 | |||
| PH | 0 – 14 | Dimension range | 6- 25 mm | |||
