High-temperature/Pressure Steam Packing
John Crane Style 387I is a special high-temperature/pressure and corrosion-inhibited valve stem packing specifically designed for steam valve service commonly related to power generation.
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- A round braided jacket of Inconel wire-inserted "S2" fiberglass over a specially designed extruded core containing chopped glass fibers, graphitic binders plus corrosion inhibitors.
- An external coating of a proprietary colloidal graphite dispersion is added, providing a highly lubricated sealing surface and protective coating.
- Temperature Limits
- Steam: 1200°F/650°C
- Pressure Limits
- 4,300 psi(g)/296 bar(g)
- pH Range
- 2 to 12 (non-buffered solutions)
- Process pumps
- Mixer and agitators
- Other rotating equipment