Technical Specifications

Operating range:

Pressure: p = ... 400 bar Temperature

• Continuous operation: 
  t = -200 ... +280 °C

Recommended surface roughness: 
R_z = 12.5 ... 50 μm 

Chemical resistance: pH = 0 … 14 

Sealing parameters
AD Directive B7

• k₀ x K_D = 65 x b_d
• k₁ = 1,4 x b_d

ASME Code

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

Materials:

• Filler material: pure PTFE
• Metal spiral: 1.4541 (321) or 1.4571 (316 Ti)

Other materials upon request

Standards and approvals:

• FDA

Recommended applications:

Industries

• Chemical industry
• Food and beverage industry
• Heat exchangers
• Covers
• Hatches
• Reactor vessels
• Process vessels
• Flange connections
• Pipe connections

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 - 9595/NF
for projection and recess flanges - 9595/VR
for projection and recess flanges, with inner ring - 9595/VRI
for raised-face flanges, with outer ring - 9595/GA
for raised-face flanges, with inner and outer ring - 9595/GIA