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Supagraf® HD Pro

Supagraf HD Pro is a high temperature / high pressure multi‑layer high grade graphite sealing system.

  • Hydrogen

Supagraf HD Pro is a high grade TA-Luft approved gasket sheet made of multi-layer stainless steel and highly oxidation-resistant flexible graphite. The layers of graphite and stainless steel sheets are laminated with a high strength non-adhesive joining system. The impregnation of the sealing layers reduces leakage and improves handling.

This product has been independently 3rd party tested and is validated by James Walker for use in hydrogen service

  • Ultra pure high grade graphite
  • TA-Luft approved (high-grade sealing system)
  • Multi-layer 316L steel reinforcements with no adhesive laminating system
  • Suitable for high gasket stress applications

  • Piping flange gaskets, heat exchangers, boilers, reactors, vessels and OEM equipment
  • Compatible with HP steam, hydrocarbons and a wide range of chemicals within HPI and CPI industries
  • High pressures (up to 200 bar)
  • Suitable for ASME, EN, JIS, DIN flanges

  • Maximum temperature: +550°C (+1022°F)
  • Minimum temperature: -196°C (-321°F)
  • Maximum pressure: 120 MPa/200 bar (2900 psi)

  • TA Luft (complies with the tightness criteria of 10-4 mbar, l/m.s of VDI guidelines 2200 and 2440)
  • API 6FB fire safe approved
  • MESC SPE 85/203 compliant

  • Available thicknesses 1 mm to 4 mm
  • Sheet size of 1500 mm x 1500 mm (gaskets can be produced up to a diameter of 1500 mm in one piece)

The operational life span of graphite at high temperatures might be limited due to media or environmental influences. Please contact us for continuous exposure in oxidising environments above +450°C.

Related Downloads

Supagraf HD Pro datasheet

English pdf (1.1 MB) Download

H2 proven products and materials

Our range of products and materials that have been independently third party tested and are validated by James Walker for sealing applications in hydrogen service.

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H2 proven products and materials

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