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1 Temperature:
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4 Flange Design:

Quick Gasket Search

This guide is for general use only, please consult Flexitallic engineering for your specific application.

  • Change HF Gasket

    Change HF Gasket

    Start The Fight Back Against Corrosion Today

    • Firesafe graphite bonded to a precision machined monel core providing a leak free seal and blow out resistance
    • Highly compressible Sigma 600 to conform to flange face corrosion damage, to seal and prevent further deterioration
    • High visibility carbon steel outer ring to aid identification, installation and ensure the sealing elements are correctly located.
  • Flexpro Graphite Gasket

    Flexpro Graphite Gasket

    The Flexpro gasket exhibits excellent compressibility and recovery characteristics, maintaining joint tightness under pressure and temperature fluctuations, temperature differential across the flange face, flange rotation, bolt stress relaxation, and creep. Suitable from vacuum to extremely high pressure applications.

  • Sigma 500

    Sigma 500

    MATERIAL: Biaxially orientated PTFE containing hollow glass microspheres
    COLOR: Blue

    • Enhanced compressibility for low bolt loads
    • Improved flexibility over conventional calendered and graphite sheets
    • Moderate concentrations of acids & caustics, chlorine and hydrogen peroxide
    • Can be used for all concentrations of sulfuric acid
    • WRAS approved for hot and cold potable water services
  • Sigma 511

    Sigma 511

    MATERIAL: Biaxially-orientated PTFE containing silica
    COLOR: Fawn

    • Standard compressibility
    • Strong acids (except hydrofluoric) to general chemicals
    • Can be used for all concentrations of sulfuric acid
    • Not suitable for molten alkali metals, fluorine gas or hydrogen fluoride
    • WRAS approved for hot and cold potable water services
  • Sigma 533

    Sigma 533

    MATERIAL: Biaxially orientated PTFE containing barium sulfate
    COLOR: Off white (pigment free)

    • Standard compressibility
    • Ideal for sealing food, pharmaceutical and other non-contamination applications
    • Strong alkaline solutions to other general chemicals
    • Aqueous hydrofluoric acid below 49%
    • Not suitable for sealing molten alkali metals or fluorine gas
  • Sigma 588

    Sigma 588

    MATERIAL: Biaxially orientated PTFE
    COLOR: Off white (pigment free)

    • Highly conformable surface layers designed for glass-lined, FRP, ceramic, plastic and low bolt load applications
    • Modified PTFE inner core design to maximize sealability and prevent blow-out
    • FDA compliant
  • Sigma 600

    Sigma 600

    Developed specifically for petrochemical and chemical use. FDA compliant for both low and high bolt loads. Is non contaminating with lower creep an cold flow. A single gasket replacement for metallic and non-metallic flange applications.

    • Max Temperature: 500°F (260°C)
    • Max Pressure: 1235 psig (8.5 MPa)
    • ASME m: 1.4
    • ASME y: 1595 psi (11 MPa)
    • pH Range: 0–14
  • Style CG

    Style CG

    Utilizes an external ring which accurately centers gasket on flange face: provides additional radial strength to prevent gasket blowout and acts as a compression stop. A general purpose gasket suitable for use with flat face and raised face flanges.

  • Style CGI

    Style CGI

    Suitable for use with flat face and raised face flanges and specified for high pressure/temperature service or where corrosive or toxic media are present.

  • Thermiculite 815 Sheet

    Thermiculite 815 Sheet

    High temperature sheet reinforced with a 0.004˝, 316L stainless steel tanged core. Provides total freedom from oxidation. Chemical compatibility exceeds graphite. Fire safe with proven global track record.

    • Max Temperature: 1800°F (982°C)
    • Max Pressure: 2900 psig (200 bar) (Class 150–300)
    • ASME m: 2.0
    • ASME y: 2500 psi (17 MPa)
  • Thermiculite 835 Spiral Wound

    Thermiculite 835 Spiral Wound
    • High temperature filler material for spiral wound gaskets
    • Cryogenics to 1800ºF / 982ºC
    • Class 150 to 2500
  • Thermiculite 845 Flexpro™ Kammprofile

    Thermiculite 845 Flexpro™ Kammprofile
    • High temperature facing material for kammprofile gaskets
    • Cryogenics to 1800ºF/982ºC
    • Class 150 to 2500
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  • Another First from Flexitallic
    Another First from Flexitallic

    Flexitallic Upgrades Standard Graphite

  • Quick Gasket Search
    Quick Gasket Search

    Search by pressure, temperature, media and/or flange design.

  • Training Seminar
    Training Seminar

    Schedule your flange assembly and bolting training seminar

  • Find Allied Distributor
    Find Allied Distributor

    Search our authorized network of Flexitallic Allied Distributors.

  • Live Chat With Engineer
    Live Chat With Engineer

    Speak live with a Flexitallic engineer for your product or application.

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