ePTFE (expanded polytetrafluoroethylene) gaskets exhibit exceptional chemical resistance, making them suitable for harsh industrial environments. They withstand a broad pH range (0-14) and resist most acids, bases, solvents, and corrosive substances, except molten alkali metals and free fluorine. Their operational temperature range (-240°C to +250°C) further enhances their durability in extreme conditions. These properties, combined with low friction and non-flammability, make eptfe gaskets ideal for industries handling aggressive chemicals, pharmaceuticals, and petroleum.
Key Points Explained:
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Broad Chemical Resistance
- ePTFE gaskets resist nearly all aggressive chemicals, including:
- Acids (e.g., sulfuric, hydrochloric)
- Bases/alkalis (e.g., sodium hydroxide)
- Solvents (e.g., acetone, ethanol)
- Petroleum hydrocarbons (e.g., fuels, oils)
- Exceptions: Molten alkali metals (e.g., sodium, potassium) and free fluorine, which can degrade the material.
- ePTFE gaskets resist nearly all aggressive chemicals, including:
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pH Stability (0–14 Range)
- Maintain integrity in both highly acidic (pH 0) and highly caustic (pH 14) environments.
- Ideal for chemical processing, pharmaceuticals, and wastewater treatment where pH fluctuations occur.
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Temperature Tolerance
- Operate reliably from -240°C to +250°C, accommodating cryogenic and high-heat applications.
- Outperform many elastomers, which degrade at extreme temperatures.
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Additional Properties
- Low friction: Reduces wear in dynamic sealing applications.
- Non-flammable: Safe for use in hazardous environments.
- FDA/USP Class VI compliant: Suitable for food, beverage, and medical industries.
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Industry Applications
- Chemical processing: Sealing reactors, pipes, and valves exposed to corrosive media.
- Oil and gas: Resisting sour gas (H₂S) and hydrocarbon exposure.
- Pharmaceuticals: Meeting purity standards for sterile processes.
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Limitations
- Avoid in systems with molten alkali metals or fluorine gas.
- Mechanical strength may be lower than metal gaskets in high-pressure scenarios.
For purchasers, selecting eptfe gaskets ensures longevity in corrosive or extreme environments, reducing maintenance costs. Always verify compatibility with specific chemicals and operational conditions.
Summary Table:
| Property | Details |
|---|---|
| Chemical Resistance | Resists acids, bases, solvents, and hydrocarbons (exceptions: molten alkali metals, fluorine) |
| pH Range | Stable in pH 0–14 (highly acidic to highly caustic) |
| Temperature Range | -240°C to +250°C (cryogenic to high-heat applications) |
| Additional Benefits | Low friction, non-flammable, FDA/USP Class VI compliant |
| Key Industries | Chemical processing, oil & gas, pharmaceuticals, food & beverage |
| Limitations | Avoid molten alkali metals and fluorine; lower mechanical strength than metal gaskets |
Upgrade your industrial sealing solutions with KINTEK's precision-engineered ePTFE gaskets—designed for unmatched chemical resistance and durability in extreme conditions. Whether you need standard or custom fabrication for semiconductor, medical, or chemical processing applications, our expertise ensures reliable performance. Contact us today to discuss your requirements or request a quote!