KLINGERSIL Hochdruckdichtung

KLINGER® Graphite Laminate SLS

The pure graphite gasket with a smooth stainless steel insert

KLINGER® Graphite Laminate SLS is especially suitable for weak flanges at high temperatures up to 450°C.


The gasket material consists of expanded layers of graphite, wich are stuck to a 0.05mm thin smooth sheet metal foil made of 1.4401. The adhesive layer is applied via a precisely controlled process, wich makes it possible to keep the amount of adhesive below 1% of the amount of graphite in order to ensure uniform distribution of the adhesive.

Areas of application

KLINGER® Graphite Laminate SLS is suitable for universal use especially in combination with weak flanges (Email, glass) and for sealing of liquid level gauges.

KLINGERSIL® C-4300 ist eine universelle Hochdruckdichtung.

Key features

  • Stainless steel foil as insert
  • Excellent chemical resistance
  • Excellent high temperature resistance


  • Provides excellent adaptability to any sealing surface
  • Seals irregular flanges
  • Conforms easily
  • Stable physical properties over the whole temperature range

Typical technical data for thicknesses 2.0 mm


Density of the graphite layer

DIN 28090-2



Purity of graphite1)

DIN 51903 %

≥ 99.0

Metallic reinforcement

Plain metal
Number of sheets


AISI 316 (L)


ASTM F 36 A % 35 - 50


ASTM F 36 A % 10 - 15
Compression creep DIN 52913

16 h / 50 MPa / 300 °C MPa ≥ 45

KLINGER cold/hot compression
50 MPa

Thickness decrease at 23 °C
Thickness decrease at 300 °C

40 - 50
1 - 4

Specific leakrate λ

DIN 28090-2 mg/s x m <0.10

Chloride content of graphite layer2)

DIN EN 15408 ppm ≤ 40

1) Nuclear quality with a purity of ≥99,8 available on request
2) Detailed specifications of the used graphite foils are found in our Graphite vademecum, which will be sent to you on request with pleasure


Dimensions of the standard sheets

Sizes 1000 x 1000 mm, 2000 x 1000 mm
Thicknesses 0.6 mm, 0.8 mm, 1.0 mm, 1.5 mm, 2.0 mm, 3.0 mm
Tolerances Thickness ± 5%
Length ± 4 mm, Width ± 4 mm

Other thicknesses, sizes and inserts 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 Infrastructure KLINGER Industry Papier und Zellstoff KLINGER Industry Transport KLINGER Industry Pharma
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