Kammprofile

Excellent Results in Critical Applications

Teadit® Kammprofile gaskets offer outstanding flexibility, assuring seal integrity under pressure and temperature fluctuations, flange rotation, bolt stress relaxation and creep.

Teadit® Kammprofile gaskets are used by the chemical and petrochemical industry, as well as in power stations and refineries, on both standard pipework and special applications, e.g. shell and tube heat exchangers, etc. Kammprofile gaskets are constructed from a precision serrated metallic core with soft facing materials - flexible graphite or expanded PTFE - bonded to either side.

Depending on the kind of metal used, Teadit® Kammprofile gaskets can be used for all media from pH 0 to 14.

camprofile

Materials

The core material should be chemically and thermally compatible with the fluid to be sealed. If possible, the core metal should be the same as used to manufacture the flanges to avoid corrosion or differential Thermal Expansion.

Facing

The most widely used covering material is Flexible Graphite. For operational conditions where Flexible Graphite is not recommended Expanded PTFE is used.

The chart below shows the Temperatre and Pressure limits for the cover materials.

Table 1
Facing Materials Temperature and Pressure Limits

MaterialTemperature ºCPressure bar
minmaxmax
Standard Flexible Graphite -240 450 345
High Temperature Flexible Graphite -240 650 345
Mica Paper -50 1000 50
24BB ePTFE -240 260 100

In oxidizing atmospheres the temperature limit for Graphite is 450°C.

Pressure and Temperature Limits

The Pressure and Temperature range is related to the range of each component. The Service Range is the combination of the limit for the metal and facing limits. For example, a Teadit® Kammprofile Style 942 with Carbon Steel core and Standard Flexible Graphite facing has the following limits:

Maximum Pressure:

345bar.

-40ºC to 455ºC

Bolting Calculation

MetalFacing"m""y" (bar)
SS, Inconel, Monel Flexible Graphite 4 310
PTFE 4 310
Mica Paper 8 407

 

 

 

 

 

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Schanzenstraße 35, 51063 Köln, Germany

Phone: +49 (0)221/922 342-0

Fax: +49 (0)221/922 342-22

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Rosenheimer Str. 10, A-6330 Kufstein Austria

Phone: +43-5372-64020-0

Fax: +43-5372-64020-20

 

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