Graphonic® Metallic Gasket

Corrugated metal gaskets for superior reliability
  • Excellent sealing performance and reliability, even in the most difficult applications.
  • Combines a corrugated metal core with a compressible sealing element of various materials.
  • Resistance to a wide range of harsh conditions, including extreme temperature, corrosive chemicals, and thermal cycling.

Graphonic® Gasket

With flexible graphite sealing element
  • Accommodates a wide range of temperatures
  • Seals effectively during thermal cycling
  • Fire safe — withstands API and FITT fire tests
  • Chemically resistant
  • Long service life

Tephonic® Gasket

With ePTFE sealing element
  • Chemically inert
  • Forms a tight seal under low bolt load
  • Conforms to minor sealing surface imperfections
  • Withstands temperatures to 500ºF (260ºC)

G.E.T.™ Gasket

With graphite and ePTFE sealing element
  • Combines fire safety with chemical resistance
  • Conforms to minor sealing surface
  • Rigid yet compressible


Graphonic® Diagram
Standard Metals Sealing Elements
  • Mild steel
  • Stainless 304
  • Stainless 316
  • INCONEL 600®
  • INCONEL 625®
  • INCOLOY 300®
  • INCOLOY 825®
  • MONEL 400®
  • Flexible graphite
  • ePTFE
  • Combination graphite and ePTFE

INCONEL® is a registered trademark of Inco Alloys International, Inc.
INCOLOY® is a registered trademark of Inco Alloys International, Inc.
HASTELLOY® is a registered trademark of Haynes International.
MONEL® is a registered trademark of International Nickel.

Engineered Data

and G.E.T.™
Max. in atmosphere:
    in steam:
    continuous in
      reducing or
      inert media:

-400ºF (-240ºC)
850ºF (454ºC)*
1200ºF (650ºC)

5432ºF (3000ºC)

-350ºF (-210ºC)
500ºF (260ºC)

Pressure, max.: 2000 psig (140 bar)
P x T, max.
    1/16" thickness:
    1/8" thickness:

700,000 (25,000)†
350,000 (12,000)†

* Maximum temperatures of 975ºF (525ºC) can be allowed for flexible graphite with oxidation inhibitors.
† P x T max. = psig x ºF (bar x ºC)
Note: When approaching maximum temperatures, please consult with us.

For more information, view our catalog of Graphonic® Family of Gaskets.

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Warning - Properties/applications shown throughout this Website are typical. Your specific application should not be undertaken without independent study and evaluation for suitability. For specific application recommendations, consult Beacon Gasket & Seals Co. Failure to select the proper sealing products could result in property damage and/or serious person injury. Performance data published in this Website has been developed from field testing, customer field reports and/or in-house testing. While the utmost care has been used in developing this Website, we assume no responsibility for errors. Specifications subject to change without notice.