Spiraltherm PTFE 9595
Features
Spiraltherm PTFE 9595 is a flange seal made from a V-shaped profiled stainless steel tape with spiral-wound pure PTFE middle layer. The ends of the stainless steel tape are spot-welded.
Advantages
- High chemical resistance
- No product contamination by PTFE possible
Operating range
Pressure: p = ... 400 bar Temperature
- Continuous operation:
t = -200 ... +280 °C
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: pure PTFE
- Metal spiral: 1.4541 (321) or 1.4571 (316 Ti)
Other materials upon request
Standards and approvals
- FDA
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
Product variants
Spiraltherm PTFE 9595/GA
Spiral wound gasket with outer guide ring.
Standard type for raised faced flanges.
Spiraltherm PTFE 9595/GIA
Spiral wound gasket with inner and outer guide ring offers the best performance in raised faced and flat flanges
The inner ring is used to
- avoid over-compression at elevated seating loads in high pressure service
- reduce turbulence within the flange area and protects against corrosion or erosion
- improve the load distribution over the gasket.
Spiraltherm PTFE 9595/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 PTFE 9595/VR
Spiral wound gasket without inner ring or outer guide ring.
Mainly used for male and female flanges or projection and recess flanges.
Spiraltherm PTFE 9595/VRI
Spiral wound gasket with inner ring.
Mainly used for male and female flanges or projection and recess flanges.
