Kammprofile serrated gasket 9598

Kammprofile serrated gasket 9598

Kammprofile serrated gasket 9598

Kammprofile serrated gasket 9598


The serrated gasket 9598 has a concentrically-machined profile based on a 4 mm thick stainless steel base plate. This is coated on both sides with a 0.5 mm thick layer of pure graphite (purity ≥ 99.85% or > 98%). Thicker layers are available on request. The serrated gasket 9598 is easy to handle and is particularly suitable for applications in the chemical and petrochemical industries and in power station technology.


  • Maximum compressive strength
  • Low minimum surface pressure required
  • High temperature stability
  • Ideal for withstanding temperature/pressure cycling

Operating range

Pressure: p = 400 bar
Higher pressures available on request Temperature
  • Continuous operation:
    t = -200 °C … +550 °C
Recommended surface roughness:
Rz = 12.5 ... 50 μm

Chemical resistance: pH = 0 … 14


  • Serrated ring:
    Standard 1.4541 and 1.4571
  • Gasket overlay:
    Statotherm pure graphite, purity ≥ 99.85% or > 98%

Standards and approvals

  • TA Luft
  • Fire-Safe (API 607)


9588/... (with graphite filler, purity > 98%)
9598/P (with graphite filler, without centring ring - Form NR)
9598/PZ (with graphite filler, with centring ring - Form IR or LR)
9598/PB (with graphite filler, convex form)
9598/SIL (sealing foil made from 0.5 mm silver, for t < 700 °C)
9598/TZ (with sintered PTFE foil, 0.5 mm thickness)
For t < 250 °C also available with PTFE-layer
9598/HT (serrated ring made of 1.4828 with glimmer layer for t < 950 °C)


After the initial warm-up, we recommend retightening the bolts (with the system depressurized) in order to compensate for any minor settling of the overlay material and thus maintain optimum surface pressure. If the gasket is replaced, the undamaged serrated profile ring can be reused.

Forms of supply

  • Standard dimensions as per DIN EN 1514-6, EN 12560-6 or ASME B16.20

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