PTFE gaskets offer a versatile range of thickness options to accommodate various industrial and chemical processing needs. Standard thicknesses typically include 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, and 10 mm, with custom dimensions available for specialized applications. These gaskets are manufactured to meet standards like EN1514-1, DIN2690, and ASME B16.20, ensuring compatibility with flanged connections across nominal sizes from DN15 to DN2000. The material's exceptional chemical resistance and temperature stability (up to 260°C) make it ideal for demanding environments, though its rigid nature requires consistent pressure for effective sealing.
Key Points Explained:
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Standard Thickness Options
- PTFE gaskets for flanges are commonly available in incremental thicknesses:
- 1 mm
- 2 mm
- 3 mm
- 4 mm
- 5 mm
- 6 mm
- 8 mm
- 10 mm
- These options cater to most industrial requirements, balancing flexibility and sealing performance.
- PTFE gaskets for flanges are commonly available in incremental thicknesses:
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Custom Thickness Availability
- Non-standard dimensions can be produced to meet specific project needs, such as:
- Thinner profiles (e.g., 0.5 mm for envelope gaskets).
- Thicker variants beyond 10 mm for high-pressure applications.
- Non-standard dimensions can be produced to meet specific project needs, such as:
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Tolerance and Manufacturing Variations
- Thickness tolerances typically adhere to ±20%, ensuring consistency.
- Gaskets may be supplied in milled (precision-cut) or slit (rolled) forms, affecting surface finish and compressibility.
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Material Properties Influencing Thickness Selection
- PTFE’s rigidity necessitates careful thickness matching to flange conditions:
- Thinner gaskets (1–3 mm) suit low-pressure systems.
- Thicker options (6–10 mm) compensate for flange misalignment or surface irregularities.
- Temperature and chemical resistance remain stable across all thicknesses.
- PTFE’s rigidity necessitates careful thickness matching to flange conditions:
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Standards and Sizing Compatibility
- Compliant with EN1514-1, DIN2690, and ASME B16.20 for flange compatibility.
- Nominal sizes range from DN15 to DN2000, with thickness tailored to pipe diameter and pressure class.
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Application-Specific Considerations
- High-Temperature Environments: Thicker gaskets (≥5 mm) mitigate thermal expansion effects.
- Chemical Exposure: Uniform thickness ensures consistent sealing against aggressive fluids.
- Reusability: PTFE gaskets are single-use; thickness must be precise to avoid resealing failures.
For specialized needs, consult manufacturers to align thickness with operational parameters like pressure, temperature, and flange type.
Summary Table:
| Thickness (mm) | Common Applications | Key Considerations |
|---|---|---|
| 1–3 | Low-pressure systems, precise sealing | Ideal for minimal flange irregularities |
| 4–6 | General industrial use | Balances flexibility and durability |
| 8–10 | High-pressure/high-temperature environments | Compensates for flange misalignment |
| Custom (e.g., 0.5 or >10) | Specialized projects | Tailored to unique operational parameters |
Need PTFE gaskets tailored to your exact specifications? Contact KINTEK today for precision-manufactured gaskets that meet EN1514-1, DIN2690, and ASME B16.20 standards. Whether you require standard thicknesses or custom solutions for semiconductor, medical, or industrial applications, our expertise ensures optimal sealing performance under extreme conditions. Get a quote now!