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Klinger® Gaskets > Gasket materials / PTFE Products > KLINGERSIL range > KLINGERSIL C-4243 - Technical data

  Gasket materials / PTFE Products
Technical data
Important points to be observed
With heightened awareness of safety and environmental issues, reducing leaks from flanged assemblies has become a major priority for industry. It is therefore important for companies who use gaskets to choose the correct material for the job and install and maintain it correctly to ensure optimum performance.
A flanged joint will remain tight as long as the surface pressure in service is higher than the minimum surface pressure required to achieve the necessary levels of tightness but is lower than the maximum permissible surface pressure.But increasingly high demands on the tightness requirements for flanged joints (e.g. Tightness class L 0.1 in accordance with DIN 28090) necessitate the application of high loads on the gasket material in order to meet these stringent requirements.
If the gasket is to be subjected to non-static loading and stress fluctuations due to temperature and
pressure cycling, it is advisable to select a gasket material which is less prone to embrittlement with
increasing temperatures (e.g. KLINGERgraphite laminate, KLINGERtop-chem or KLINGERtop-sil).
In cyclic loading conditions we recommend a minimum surface stress of 30 MPa and that the gasket
should be as thin as is practicable. For safety reasons never re-use gaskets.
Typical values
Compressibility ASTM F 36 J % 8
Recovery ASTM F 36 J min % 55
Stress relaxation DIN 52913 50 MPa, 16 h/175°C MPa 24
thickness decrease at 23°C % 10
Klinger cold/hot compression,50 MPa thickness decrease at 200°C % 25
Tightness acc. to DIN 3535/6 mg/s x m < 0.1
Thickness increase ASTM F 146 oil JRM 903: 5 h/150°C % 5
fuel B: 5 h/20°C % 7
Density g/cm3 1.75
Dimensions of the standard sheets
1000 x 1500 mm, 2000 x 1500 mm.
0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, 3.0 mm;
other thicknesses and sizes on request.
thickness ± 10%, length ± 50 mm, width ± 50 mm
KLINGERSIL® gasket materials are generally furnished with surfaces of low adhesion. On request, graphite
facings and other surface finishes on one or both sides are also available.
Function and durability
The performance and service life of KLINGER gaskets depend in large measure on proper storage and fitting,
factors beyond the manufactor’s control. We can, however, vouch for the excellent quality of our products.
With this in mind, please also observe our installation instructions.