Spiraltherm Graphite 9594

Features

Spiraltherm Graphite H 9594 is a flange seal made from a V-shaped profiled stainless steel tape with spiral-wound graphite middle layer (purity >99.85 %). The ends of the stainless steel tape are spot-welded.

Operating range

Pressure: p = 400 bar
Temperature

• Continuous operation:
  t = -200 ... +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

ASME Code

• Gasket factor: m = 2.5
• Minimum surface pressure:
  y = 10,000 psi, y = 70 MPa

Materials

• Filler material:
  99.85 % pure graphite
• Metal spiral:
  1.4541 (321) or 1.4571 (316 Ti)
• 9594/...R variants:
  Sulfur content <100 ppm, soluble sulfates <100 ppm

Other materials upon request

Standards and approvals

• BAM (on request)

Variants

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)

Forms of supply

Rings:
for tongue-and-groove flanges - 9594/NF (standard), 9594/NFR (sulfur content <100 ppm)
for tongue-and-groove flanges, with compression curve - 9594/NFS (standard), 9594/NFSR (sulfur content <100 ppm)
for projection and recess flanges - 9594/VR (standard), 9594/VRR (sulfur content <100 ppm)
for projection and recess flanges, with inner ring - 9594/VRI (standard), 9594/VRIR (sulfur content <100 ppm)
for raised-face flanges, with outer ring - 9594/GA (standard), 9594/GAR (sulfur content <100 ppm)
for raised-face flanges, with inner and outer ring - 9594/GIA (standard), 9594/GIAR (sulfur content <100 ppm)
Manhole Gasket:
9594/MH (standard), 9594/MHR (sulfur content <100 ppm)