NA 715

Expanded graphite packing having an Inconel wire mesh jacketing over each yarn, further reinforced with multiple Inconel wire inside each yarn

  • A fantastic plant-wide block valve spool packing
  • Passed API 589/607 Fire Safe tests from Yarmouth Research and Technology
  • Passed API 622 FE test with 3 ppm average leakage from Yarmouth Research and Technology
  • Packing exhibits extreme pressure and extrusion resistance
  • The packing exterior is densely impregnated with lubricating agents to reduce stem friction and a corrosion inhibitor to prevent pitting
  • High purity of graphite: 99.5–99.9%
  • Packing set treated with sacrificial corrosion inhibitor to prevent valve stem corrosion

Available in rope and ring form

Service Media and Conditions Superheated and saturated steam, all non-oxidising liquids and gases, hot ash, hydrocarbons, dyes and chemicals, fuel oil and lube oil etc
Temperature -240°C to 650°C
Pressure 550 bar (static)
pH 0 to 14
Applications Valves