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NA 707 - Flexible Graphite Packing Ring

Flexible graphite moulded packing rings

  • Made by compressing spirally wrapped graphite tapes
  • High purity of graphite with low chloride, sulphur, fluoride, ash content etc with no binders
  • Self-lubricating packing with extremely low friction characteristics
  • Passed fugitive emissions tests as per Shell SPE MESC 77/312 (as Intermediate Rings with NA 701 packing), Class B
  • Nuclear grade on request

Available in endless, 2 halves oblique cut, single oblique cut

Service Media and Conditions Superheated and saturated steam, all non-oxidising liquids and gases, hydrocarbons, dyes and chemicals, fuel oil and lube oil etc
Temperature -240°C to 540°C
Pressure 350 bar (static), 20 bar (rotary)
Shaft Speed 5 m/sec (rotary)
pH 0 to 14
Applications Valves