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KLINGERSIL C-4243 Compressed Non Asbestos Fibre (CNAF) Reinforced Gasket Material

Universal soft gasket material for general applications.

Consisting of organic fibers bonded with NBR, this universal gasket material is suitable for general non-severe applications. C-4243 is resistant to oils, water, hydrocarbons and other chemicals at lower pressure and temperatures.

Material of construction

Organic fibers bonded with NBR.

Surfaces

KLINGERSIL gasket materials are generally furnished with surfaces of low adhesion. On request, graphite facings on one or both sides are also available.

Colour

Green

Industries

Tests and approvals

KLINGERSIL C-4243 Compressed Non-asbestos Fibre (CNAF) Reinforced Calendered Sealing Gasket Material Jointing Sheets

Standard sheet dimensions​

Sizes 1000 x 1500 mm, 2000 x 1500 mm
Thicknesses 0.4 mm, 1.0 mm, 1.5 mm, 2.0 mm, 3.0 mm, 4.0 mm, 5.0 mm
Subject to stock availability
Tolerances Thickness acc. to DIN 28091-1
Length ±50 mm, Width ±50 mm

Typical technical data for thickness 1.5 mm

Compressibility ASTM F 36 J 12 %
Recovery ASTM F 36 J 50 %
Stress relaxation BS 7531 40 MPa,/200°C 20 MPa
Heat loss DIN 52911 30 %
KLINGER cold/hot compression thickness decrease at 23 °C 15 %
50 MPa thickness decrease at 300 °C 20 %
Tightness DIN 3535/6 <0.1 mg/(s x m)
Thickness increase after fluid immersion ASTM F 146 Oil ASTM No 3: 5h/150°C 4 %
Fuel B: 5h/23°C 6 %
Density 1.65 g/cm3
Weight increase after fluid immersion ASTM F 146 Oil ASTM No 3: 5h/150°C 11 %
Fuel B: 5h/23°C 12 %
Classification acc. to BS 7531:2006 Grade AY

ASME-Code sealing factors

for gasket thickness 1.5/2.0 mm tightness class 0.1 mg / s x m MPa y 15
m 2.2

P-T diagram

KLINGERSIL C-4243 P-T diagram

The area of the P-T diagram

  1. In area one, the gasket material is normally suitable subject to chemical compatibility.
  2. In area two, the gasket material may be suitable but a technical evaluation is recommended.
  3. In area three, do not install the gasket without a technical evaluation.
Always refer to the chemical resistance of the gasket to the media.

Chemical resistance chart

Simplified overview of the chemical resistance depending on the most important groups of raw materials:
A: small or no attack B: weak to moderate attack C: strong attack
Parafinic hydrocarbon Motor fuel Aromates Chlorinated hydrocarbon fluids Motor oil Mineral lubricants Alcohol Ketone Ester Water Acid (diluted) Base (diluted)
A B C C A B A C C A B B
For more information on chemical resistance please contact us

Function and durability

The performance and service life of KLINGER gaskets depend in large measure on proper storage and fitting, factors beyond the manufacturer’s control. KLINGER can, however, vouch for the excellent quality of their products.

With this in mind, please also observe their installation instructions.

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 to suit the application and service conditions and install and maintain it correctly to ensure optimum performance.

Gaskets installed with high seating stresses exhibit a longer service life than gaskets installed with lower compressive gasket stresses.

Re-use

For safety and functional reasons never re-use gaskets.
All information is based on years of experience in production and operation of sealing elements. However, in view of the wide variety of possible installation and operating conditions one cannot draw final conclusions in all application cases regarding the behaviour in gasket joint. The data may not, therefore, be used to support any warranty claims. Subject to change without notice.

Write to us for more information regarding price or availability. We can ship to almost anywhere across the world.

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