KLINGERSIL Hochdruckdichtung


Special high-pressure gasket for highest thermal and mechanical stresses

KLINGERSIL® C-4509 is a special high-pressure gasket for highest thermal and mechanical stresses. Due to the expanded metal reinforcement it offers a high stress capability and is suitable for high bolt loads. The basic material KLINGERSIL® C-4500 is a Fire Safe grade.


Carbon fibers and special high temperature resistant additives, bonded with NBR.

Areas of application

Made from high-tech materials it offers excellent service in many sectors of the chemical industry. Main fields of application: alkaline media and steam.

KLINGERSIL® C-4300 ist eine universelle Hochdruckdichtung.

Key features

  • Utilization of carbon fibres
  • Expanded metal reinforcement
  • Improved stress relaxation


  • Suitable for high-pressure applications
  • Higher resistance against blow-outs
  • More safety at high internal pressures

Typical technical data for thickness 1.5 mm

Compressibility ASTM F 36 J




Recovery ASTM F 36 J

  % 62

Stress relaxation DIN 52913

50 MPa,16 h / 300 °C

MPa 43

Stress relaxation BS 7531

40 MPa, 16 h / 300 °C MPa


KLINGER cold/hot compression
50 MPa

thickness decrease at 23 °C
thickness decrease at 300 °C


Thickness increase after fluid
immersion ASTM F 146

Oil IRM 903: 5 h / 150 °C
Fuel B: 5 h / 23 °C





ASME-Code sealing factors

for gasket thickness 1.0 mm

tightness class 0.1 mg / s x m


y 30
m 3.1

for gasket thickness 1.5 mm

tightness class 0.1 mg / s x m


y 30
m 4.0

for gasket thickness 3.0 mm

tightness class 0.1 mg / s x m


y 30
m 6.0

Dimensions of the standard sheets

Sizes KLINGERSIL® C-4509 1000 x 1500 mm, 2000 x 1500 mm
Sizes KLINGERSIL® C-4509 L 1000 x 1230 mm, 2000 x 1230 mm
Thicknesses 1.0 mm, 1.5 mm
Tolerances Thickness acc. to DIN 28091-1
Length ±50 mm, Width ±50 mm

Other thicknesses, sizes and tolerances on request.

Function and durability

The performance and service life of KLINGER gaskets depend to a large extent 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 take note of our installation manual.


Below you can find more product-related information.

Industries who we work with
KLINGER Industry KLINGER Industry Chemical KLINGER Industry Oil Gas KLINGER Industry Energie KLINGER Industry Papier und Zellstoff KLINGER Industry Transport
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