Flexible Graphite Foil (C000305)



The flexible graphite foil is manufactured from high quality expanded natural graphite free of adhesives and binders. Inhibitors can be added to enhance the performance.

It offers outstanding protection against oxidation for greater reliability and longer service life.



Ash content cash

0.15 % at 20 °C

DIN 51903

Bulk density ρbulk

1 g/cm³ at 20 °C

Permeability coefficient cperm

2E-5 cm²/s at 20 °C

for air through plane


Compressibility factor εKSW

45 % at 20 °C

DIN 28090-2

Elastic modulus E

0.7 GPa at 20 °C

DIN 28090-1

Elongation A

1 % at 20 °C

Gasket factor "m" m

2 N/mm² at 20 °C

Gasket factor "y" y

10 N/mm² at 20 °C

Hardness, Shore D HS D

30 [-] at 20 °C

Hot creep compression factor εWSW

3 % at 20 °C

DIN 28090-2

Recovery compression factor εWRW

5 % at 20 °C

DIN 28090-2

Show chart

Tensile strength Rm

4 MPa at 20 °C


Coefficient of thermal expansion α

1E-6 1/K at 1000 °C

Coefficient of thermal expansion, transverse αtrans

5E-5 1/K at 1000 °C

Thermal conductivity λ

200 W/(m·K) at 20 °C

Thermal conductivity, transverse λtrans

5 W/(m·K) at 20 °C


Electrical resistivity ρel

8E-6 Ω·m at 20 °C

Electrical resistivity, transverse ρel,trans

6.5E-4 Ω·m at 20 °C

Chemical properties


Weight %



99.85 %


0.03 %


5E-3 %

halogen content


1E-3 %


1E-3 %

Technological properties

Application areas

Metallic gaskets such as spiral wound gaskets, corrugated metal gaskets and kammprofile gaskets, compression packing for stuffing boxes

Corrosion inhibitor

Passive corrosion inhibitor (ASTM F 2168-13)


The key feautres are: Soft and flexible, inert and highly impermeable to gases and liquids, fire safe; Asbestos-free, no associated health risks; Free of any polymers or organic binders; No aging or fatigue under dynamic load even at elevated temperatures; Even in long term services, no noticeable changes in properties; No measurable cold or warm flow characteristics up to the maximum permissible gasket stress; Electrically conductive, no static charge; Excellent chemical resistance and high thermal shock capability; Operating temperatures from cryogenic to super-heated steam temperature. Life time might be limited by the joint design, actual equipment temperatures and operating temperatures; Easy handling and processability during assembly or punching

Oxidation inhibitor


This material data has been provided by Goodfellow.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.