Spiraltherm Graphite 9584

Spiraltherm Graphite 9584

Spiraltherm Graphite 9584


Spiraltherm Graphite S 9584 is a flange seal made from a V-shaped profiled stainless steel tape with spiral-wound graphite middle layer (purity >98 %). The ends of the stainless steel tape are spot-welded.


  • Universal industrial grade
  • Easy to handle

Operating range

Pressure: p = 400 bar Temperature
  • Continuous operation:
    t = -200 °C … +550 °C
  • Inert environment:Contact us to discuss higher temperatures
Recommended surface roughness:
RZ = 12.5 ... 50 μm
Chemical resistance: pH = 0 … 14

Sealing parameters
AD Directive B7
  • k0 x KD = 65 x bd
  • k1 = 1,4 x bd
  • Gasket factor: m = 2.5
  • Minimum surface pressure:
    y = 10,000 psi, y = 70 MPa


  • Filler material: 98% pure graphite
  • Metal spiral: 1.4541 (321) or 1.4571 (316 Ti)
  • 9584/...R variants: Sulfur content <100 ppm, soluble sulfates <100 ppm
Other materials upon request

Standards and approvals

  • TA Luft (9584/GIA only)
  • BAM (on request)
  • Fire-safe API 607 (9584/GIA only)


9584/... (98 % pure graphite filler)
9594/... (99,85 % pure graphite filler)
9594/...R (graphite filler with low sulfur < 200 ppm and water soluble sulfate < 100 ppm cont)
9584/...TZ (with additional PTFE-sealing zone, T < 280 °C)
9594/...TZ (with additional PTFE-sealing zone, T < 280 °C)
9595/... (pure PTFE filler, T < 280 °C)
9596/... (mica filler, T < 900 °C)


Spiraltherm Graphite 9584 gaskets filled with high quality graphite are Fire Safe.

Forms of supply

for tongue-and-groove flanges - 9584/NF (standard), 9584/NFR (sulfur content <100 ppm)
for tongue-and-groove flanges, with compression curve - 9584/NFS (standard), 9584/NFSR (sulfur content <100 ppm)
for projection and recess flanges - 9584/VR (standard), 9584/VRR (sulfur content <100 ppm)
for projection and recess flanges, with inner ring - 9584/VRI (standard), 9584/VRIR (sulfur content <100 ppm)
for raised-face flanges, with outer ring - 9584/GA (standard), 9584/GAR (sulfur content <100 ppm)
for raised-face flanges, with inner and outer ring - 9584/GIA (standard), 9584/GIAR (sulfur content <100 ppm)
Manhole Gasket:
9584/MH (standard), 9584/MHR (sulfur content <100 ppm)

Product variants

Spiraltherm Graphite 9584/GA
Spiral wound gasket with outer guide ring.
Standard type for raised face flange connections.

Spiraltherm Graphite 9584/GIA
Spiral wound gasket with inner and outer guide ring. This style offers the best performance for raised-face flange connections.
The inner ring is used to provide:
- Avoid over-compression at elevated seating loads in high pressure service
- Reduced turbulence within the flange area and protects against corrosion or erosion
- Improvement of the load distribution over the gasket

Spiraltherm Graphite S 9584/NF
Spiral wound gasket without guide or inner ring.
This style of gasket is used in load-bearing flange configurations, such as tongue and groove flanges.
Standard dimensions according to EN/ASME.
Spiraltherm Graphite 9584/VRI
Spiral wound gasket with inner ring.
Mainly used for male and female flanges or projection and recess flanges.
An inner ring is necessary as a compression stop.

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Technical Datasheet S Spiraltherm Graphite TDB 9584