Gaskets and Sheet Jointings

Corrusafe FS Gaskets

Corrusafe FS is a fire-safe certified gasket comprising a corrugated support ring of stainless steel with dual material sealing faces. In operation, its inner sealing envelope of PTFE provides a chemically inert surface that eliminates the risk of process contamination. The outer elements of graphite provide secondary sealing under fire conditions.


  • Fire Test certification to ANSI/API  607, Fifth edition, and ISO 10497:2004. Third party tests were carried out by CEWAC/EID and witnessed by Lloyds.
  • Manufactured in accordance with all relevant gasket standards to suit flange designations: ASME B16.5, BS 1560, ASME B16.47 Series A (MSS-SP44), ASME B16.47 Series B (API 605), BS EN 1092 (BS 4504); plus DIN, JIS and NF.

Typical applications
Flange sealing duties in aggressive environments, where it is essential to prevent leakage of flammable, corrosive or toxic media under emergency fire conditions. Corrusafe FS is recommended for pipelines and pressure vessels on steam, petrochemical, nuclear, marine and hydraulic plant, plus heat exchangers.

Prime feature
Recorded zero leakage under API 607/ISO 10497 test conditions that covered preliminary hydro test, fire type-testing, and post burn leakage.

Support ring material
Stainless steel to BS EN 10088-2-1.4404 (formerly Grade 316L).

Service capabilities
Maximum temperature (continuous operation): +260°C
Maximum operating pressure: 5 MPa/50 bar

How it is supplied
Sizes: DN10 to DN1200, pressure ratings PN10 to PN40; 0.5-inch to 48-inch for ASME flange Classes 150 to 600.