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Gasket material based on organic fibres bound with NBR.
Klinger Hot and Cold Compression Test Method
The Klinger Hot Compression Test was developed by Klinger as a method to test the load bearing capabilities
of gasket materials under hot and cold conditions.
In contrast to the BS 7531 and DIN 52913 tests, the Klinger Compression test maintains a
constant gasket stress throughout the entire test. This subjects the gasket to more severe conditions.
The thickness decrease is measured at an ambient temperature of 23°C after applying the gasket load.
This simulates assembly. Temperatures up to 300°C are then applied and the additional
thickness decrease is measured. This simulates the first start up phase.
The many, varied demands placed on gaskets
A common perception is that the suitability of a gasket for any given application depends upon the
maximum temperature and pressure conditions. This is not the case. Maximum temperature and
pressure values alone can not define a material’s suitability for an application.
These limits are dependent upon a multiplicity of factors as shown in the diagram below.
It is always advisable to consider these factors when selecting a material for a given application.
Selecting gaskets with pT diagrams
The Klinger pT diagram provides guidelines for determining the
suitability of a particular gasket material for a specific application
based on the operating temperature and pressure only.
Additional stresses such as fluctuating load may significantly
affect the suitability of a gasket in the application and must be
considered separately. Always refer to the chemical resistance of the
gasket to the fluid.
Areas of Application
(1) In area one, the gasket material
is normally suitable subject to
chemical compatibility
(2) In area two, the gasket materials
may be suitable but a technical
evaluation is recommended.
(3) In area three, do not install
the gasket without a technical