ePTFE (expanded polytetrafluoroethylene) gaskets are highly valued for their exceptional compression and rebound characteristics, making them ideal for demanding sealing applications. They typically exhibit a compression ratio of 55% to 80%, allowing them to conform tightly to irregular surfaces, and a rebound rate of 15% to 20%, ensuring resilience under tension. These properties, combined with their chemical resistance and thermal stability (-40 to 230°F/-40 to 110°C), make them suitable for harsh environments involving acids, solvents, and extreme temperatures. Their low friction and non-stick properties further enhance their performance in dynamic sealing scenarios.
Key Points Explained:
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Compression Characteristics
- Compression Ratio (55%–80%): eptfe gasket can compress significantly under load, enabling effective sealing even on uneven surfaces. This high compressibility ensures minimal leakage in high-pressure applications.
- Load Distribution: The material distributes compressive forces evenly, reducing stress concentrations and prolonging gasket life.
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Rebound Properties
- Rebound Rate (15%–20%): After compression, ePTFE gaskets partially recover their original shape, maintaining seal integrity during thermal cycling or mechanical movement.
- Resilience: This rebound capability prevents permanent deformation, critical for applications with fluctuating pressures or temperatures.
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Environmental Resistance
- Temperature Range: Stable performance from -40°F to 230°F (-40°C to 110°C), suitable for cryogenic and moderate high-temperature environments.
- Chemical Resistance: Resists acids, alkalis, hydrocarbons, and solvents, ensuring durability in aggressive industrial settings.
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Additional Advantages
- Low Friction & Non-Stick: Reduces wear in dynamic applications and prevents adhesion to sealed surfaces.
- Flexibility: Accommodates flange misalignment or surface imperfections without compromising the seal.
For purchasers, these traits translate to long-term reliability, reduced maintenance, and cost savings in corrosive or high-variability conditions. Have you considered how these rebound properties might affect your specific pressure cycles?
Summary Table:
| Property | Value | Benefit |
|---|---|---|
| Compression Ratio | 55%–80% | Conforms tightly to irregular surfaces, ensuring minimal leakage. |
| Rebound Rate | 15%–20% | Maintains seal integrity during thermal cycling or mechanical movement. |
| Temperature Range | -40°F to 230°F (-40°C to 110°C) | Performs reliably in cryogenic and moderate high-temperature environments. |
| Chemical Resistance | High | Resists acids, alkalis, hydrocarbons, and solvents for long-term durability. |
Upgrade your sealing solutions with KINTEK's precision-engineered ePTFE gaskets. Whether you need standard or custom designs for semiconductor, medical, or industrial applications, our gaskets deliver unmatched resilience and chemical resistance. Contact us today to discuss your requirements and benefit from our expertise in high-performance PTFE components.