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.

Kammprofile serrated gasket 9598

Product Description

Features:
  • Concentrically-machined profile based on a 4 mm thick stainless steel base plate
  • 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
  • Easy to handle 
Benefits:
  • Maximum compressive strength
  • Low minimum surface pressure required
  • High temperature stability
  • Ideal for withstanding temperature/pressure cycling
 

Technical Specifications

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

Materials:
  • 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)
Recommended applications:

Industries

  • Process industry
  • Oil & gas industry
  • Petrochemical industry
  • Chemical industry
  • Power plant technology
  • Building services industry

Mechanical Units

  • Heat exchanger
  • Covers
  • Tank hatches
  • Process boilers
  • Flanged connections
  • Pipe connections
  • Furnaces
  • Maintenance seals
Variants:

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)

Notes:

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