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KLINGERSIL range - KLINGERSIL C-4408
 

High strength due to steel reinforcement

Universal high-pressure gasket (C-super) for use in a wide range of industrial applications.
 
Basis
Aramid fibres, bound with NBR. Suitable for high stress due to wire reinforcement. Resistant to oils, water,
steam, gases, fuels, alcohols, hydrocarbons, lubricants and refrigerants.
 
Klinger cold/hot compression
With this test method developed by Klinger you can evaluate the cold/hot compression of a gasket in cold and
hot condition.
Unlike the method acc. to DIN 52913 and BS 7531, the surface load is kept constant during the complete
test so that the gasket is exposed to much tougher conditions.
The thickness decrease at an ambient temperature of 23°C and at heating up to 300°C is measured.
The indicated thickness decrease at 300°C refers to the thickness obtained after loading at 23°C.
 
The many and varied demands made on gaskets
The successful operation of a gasket depends upon a multiplicity of factors.
Many who use static gaskets believe that the values quoted for maximum
admissible temperature and maximum operating pressure are inherent
properties or characteristics of gaskets and gasket materials.
Unfortunately, this is not the case. The maximum temperatures and
pressures at which gaskets may be used are influenced by a large
number of factors. Therefore a definite statement of
these values for gasket material is not possible.
 
So why does Klinger provide pT diagrams?
For the reasons given the pT diagram
is not infallible: it serves as a rough
guide for the end user who often has
only the operating temperatures and
pressures to go on.
Additional stresses such as
greatly fluctuating load may
significantly affect whether a gasket is
suitable for the application.
Resistance to media must be
taken into account in every case.
 
The fields of decision
(1) If your operating temperatures
and pressures fall within this field,
a technical examination is normally
unnecessary.
(2) If your operating temperatures
and pressures are within this field,
a technical examination is
recommended.
(3) If your operating temperatures
and pressures are within this “open“
field, a technical examination is
always necessary.

* Gaskets according to DIN 2690 are only
standardised up to PN 40
 
Important points to be observed

The selection of gaskets requires expertise and know-how since ever greater reliability coupled with the
lowest possible leakage rates are demanded of gasket materials. The exacting demands made on
the tightness of gasket materials (e.g. Tightness class L0.01) mean that with increasing internal pressure higher
surface pressures must be applied to the gasket.

It must be shown that the flange joint will tolerate the demands made on it without being mechanically
overloaded. Furthermore, the surface pressure applied to create the seal should never fall below the required
minimum value since this will reduce the life of the gasket. Highly stressed, but not overstressed gaskets have a
longer life than understressed gaskets.
If the gasket fitted will be subjected to non-static loading, or will suffer stress fluctuations during
discontinuous operation, it is advisable to choose a gasket which is not prone to embrittlement with
increasing temperature (e.g. KLINGERgraphite laminate or KLINGERtop-chem), especially
for steam and/or water applications.

For discontinuous operations in water and/or steam applications, we recommend as a general guide a
surface pressure of about 30 MPa. In such cases the gasket should be as thin as is practicable.
For reasons of safety, we advise against the re-use of gaskets.
 
Dimensions of the standard sheets
Sizes:
1,000 x 1,500 mm, 1,500 x 2,000 mm
Thicknesses:
0.5 mm, 1.0 mm, 1.5 mm,
2.0 mm, 3.0 mm, other thicknesses on request.
Tolerances:
thickness ± 10%, length ± 50 mm, width ± 50 mm
 
Typical values for 2 mm thickness
Compressibility ASTM F 36 J % 8
Recovery ASTM F 36 J min % 50
Stress relaxation DIN 52913 50 MPa, 16 h/300 °C MPa 28
Klinger cold/hot compression, 50 MPa thickness decrease at 23°C % 10
thickness decrease at 300°C % 22
Tightness acc. to DIN 3535/6 ml/min 2.5
Soluble chloride content chlorides (sol.) ppm 150
Thickness increase ASTM F 146 oil JRM 903: 5 h/150°C % 5
fuel B: 5 h/23°C % 5
Density g/cm3 1.9
 
Rings and other finished gaskets
These gaskets are available in any size and corresponding sheet thicknesses, also flanged and PTFE-enveloped .
 
Surfaces
The standard surface finish of the material is such that the surface has an extremely low adhesion.
On request, graphite facings and other surface finishes on one or both sides are also available.
 
Function and durability
The performance and 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.