Graphite Gaskets — Flexible Graphite & Metal-Composite Seals
Premium graphite gaskets made from flexible expanded graphite and metal-reinforced constructions (spiral wound, ring-type, and jacketed). Engineered for high temperature, wide chemical compatibility and long-term tightness in industrial process applications. Custom cut and certified options available.
Description
Graphite gaskets are non-metallic sealing products based on flexible expanded (exfoliated) graphite and are available in pure graphite sheet form or combined with metal parts (spiral-wound, metal-jacketed, camprofile and ring-type gaskets). They provide proven sealing performance where high temperature, thermal cycling and chemically aggressive media are involved. Typical uses include flanged joints, heat exchangers, reactors, valves and pump housings across chemical, petrochemical, power, and refinery industries.
Key benefits
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Wide temperature capability — effective from cryogenic service up to very high temperatures (typical service up to 450–550 °C; higher in inert atmospheres).
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Excellent chemical compatibility — resists acids, alkalis, hydrocarbons and many solvents.
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Low creep & good recovery — maintains bolt load and long-term tightness under thermal cycling.
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High conformability — fills flange surface imperfections for improved sealing on rough or aged faces.
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Fire-resistant & steam compatible — suitable for many steam and high-temperature systems (select grades).
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Customisable constructions — combine graphite with metal cores, rings or jackets for mechanical strength and handling.
Typical applications
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Chemical and petrochemical plants (reactors, piping, acid/alkali lines)
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Refineries and oil & gas (heat exchangers, flanges, high-temp piping)
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Power generation (steam lines, turbines, heat exchangers)
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Process engineering (valves, pumps, filter housings)
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Shipbuilding and marine systems (high temp / high pressure)
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Metallurgy, cement and high-temperature industrial equipment
Why choose our Graphite Gaskets?
Our graphite gaskets combine the proven thermal and chemical performance of flexible expanded graphite with practical, engineered constructions for real-world flange sealing. Whether you need a simple die-cut graphite ring, a robust spiral-wound gasket for high pressure, or a jacketed solution for oxidising high-temperature service, we offer grade selection, custom cutting and supporting p-T data to ensure safe, long-lasting tightness. Choose graphite when your application demands wide chemical compatibility, excellent thermal stability and low maintenance sealing under thermal cycling.
Typical technical specifications
| Base material | Flexible expanded graphite (natural graphite flake). |
|---|---|
| Available thicknesses | Sheets (0.25–3.0 mm typical), spiral-wound (various ASME/EN sizes), jacketed rings, camprofile and die-cut gaskets. |
| Density | Typical range ~0.7–1.3 g/cm³ (grade dependent). |
| Compressibility / Recovery | Moderate compressibility with good recovery — suitable for bolted flange joints. |
| Max service temperature | Commonly up to ~450 °C in oxidising atmospheres; 500–650 °C+ possible in inert/reducing environments with appropriate metal protection. |
| Chemical resistance | Excellent to hydrocarbons, acids and alkalis; avoid prolonged exposure in strongly oxidising conditions at high temperature without protective jacket. |
Materials & construction options
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Pure flexible graphite sheet (die-cut gaskets, full-face or ring gaskets).
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Spiral-wound (metal winding + graphite filler): standard stainless windings (304/316) or high-alloy windings for corrosive service.
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Metal-jacketed graphite: stainless jacket (1.4404 / 316L) with graphite core for mechanical protection and high temp. use.
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Graphite with inner/outer rings: to protect sealing faces and improve centering.
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Coated / impregnated graphite: oxidation inhibitors or PTFE/graphite blends for specific chemical or sliding requirements.
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Custom die-cut, bonded or adhesive-backed versions for simple installation.
