Sealing Applications
Flange gaskets, valve seals and pipe-connection gaskets — conformable, leak-proof and reusable across thermal cycles.
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Expanded PTFE · Sheet & Gasket Material
Expanded PTFE Sheet Manufacturer
Peflon Expanded PTFE Sheet is a polytetrafluoroethylene (PTFE) material made through an expansion process that provides greater flexibility and adaptability than traditional PTFE sheet.
- Microporous, soft and conformable structure
- Excellent sealing under high pressure and temperature
- Inert to nearly all chemicals — acids, alkalis, solvents
- Non-toxic — food and pharmaceutical grade available
100% PTFE
Virgin Resin Base
4 Industries
Sealing · Chemical · Food · Auto
Microporous
Expanded Structure
FDA · REACH
Compliance Ready
Introduction
Different Types of Expanded PTFE Sheet by Application
Peflon Expanded PTFE Sheet is suitable for a wide range of applications due to its excellent chemical stability, high-temperature resistance, low coefficient of friction and good compression-set behavior.
- Sealing Applications: Expanded PTFE sheets are commonly used as gaskets for flanges, valves, pipe connections and other industrial equipment.
- Chemical Industry: Used as anti-corrosion linings in chemical reactors, tanks and equipment to protect against corrosive chemicals.
- Food and Pharmaceutical Industries: Non-toxic and ideal for sealing equipment in food processing, pharmaceuticals and beverage production.
- Automotive Industry: Utilized to seal hydraulic systems, oil and gas pipelines, and other components requiring high sealing performance.
Applications
Expanded PTFE Sheet by Industry
Chemical Industry
Anti-corrosion linings for chemical reactors, storage tanks and process equipment exposed to acids, bases and solvents.
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Food & Pharmaceutical
Non-toxic, FDA-grade ePTFE for sealing equipment in food, beverage and pharmaceutical production lines.
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Automotive Industry
Hydraulic seals, oil & gas pipeline gaskets and high-pressure sealing components for cars and heavy machinery.
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Performance
Key Features of Expanded PTFE Sheet
Highly Flexible
Softer and more flexible than traditional PTFE sheets — conforms to imperfect flange faces.
Excellent Sealing
Microporous structure provides reliable seals in high-pressure, high-temperature environments.
Chemical Resistance
Resists nearly all chemicals — including acids, alkalis and aggressive solvents.
Low Friction
Reduces equipment wear and extends service life on sliding seal interfaces.
High-Temperature Resistance
Performs reliably across extreme temperature ranges, from cryogenic to +260 °C.
Compression Resistance
Ideal for high-pressure sealing applications — maintains seal integrity under load.
Non-toxic: Expanded PTFE is non-toxic and can be used in the food and pharmaceutical industries.
Manufacturing
How We Manufacture Expanded PTFE Sheet
The process of making Expanded PTFE Sheet typically involves multiple steps, each of which needs to be tightly controlled to ensure the final product has excellent flexibility, sealing properties, high-temperature resistance and chemical resistance.
Raw Material Preparation
Verified virgin PTFE fine powder as the base resin — traced lot-by-lot.
Sintering & Drying
Controlled sintering to lock the molecular structure before expansion.
Directional Stretching
Bi-axial expansion creates the microporous, conformable sheet structure.
Post-Processing
Calibration, slitting and surface finishing to customer-spec width and thickness.
Quality Testing
Density, tensile, compressibility and chemical resistance — every roll inspected before shipment.
Why Peflon
How Peflon Makes Quality Sure
Peflon Expanded PTFE Sheet is of exceptional quality — made from high-purity PTFE resin and processed with precision craftsmanship to ensure consistency and high performance. Its unique expanded structure gives it excellent flexibility, sealing, and resistance to high temperatures and chemicals, preventing leaks and extending equipment life under extreme conditions. With a low coefficient of friction and excellent compression recovery, Expanded PTFE Sheet excels in a wide range of industrial sealing applications — a reliable solution for the toughest jobs. Manufactured under ISO 9001 and supplied with full REACH / RoHS / FDA documentation.
High-Purity Resin Base
Made from virgin PTFE fine powder — no recycled scrap, no fillers in the standard food / pharma grade.
Lot-Traceable Production
Every roll carries a lot ID linked to raw-material batch, expansion conditions and QC data.
Compression Recovery Tested
Sealability tested per ASTM F36 — uniform performance across the full sheet width.
Big-Brand Equivalents
Expanded PTFE Sheet Cross-Reference
Looking for a cost-effective alternative to a major brand of expanded PTFE gasket sheet? Peflon supplies quality-matched ePTFE sheet as a drop-in replacement for the following industry-leading sealing products.
| Brand | Series / Product | Typical Peflon Equivalent |
|---|---|---|
| Gore® GR® Sheet Gasket | Expanded PTFE sheet gasket | Peflon Expanded PTFE Sheet · Sealing Grade |
| Garlock GYLON® | GYLON® 3500 / 3504 / 3510 ePTFE sheet | Peflon Expanded PTFE Sheet · Chemical Grade |
| Flexitallic Sigma® | Sigma® 500 / 533 / 550 ePTFE sheet | Peflon Expanded PTFE Sheet · High-Pressure |
| Donit Tesnit® | Tesnit® BA-GL ePTFE sheet | Peflon Expanded PTFE Sheet · Food / Pharma |
| Klinger® Soft-Chem | Klinger® Soft-Chem 4401 ePTFE sheet | Peflon Expanded PTFE Sheet · Sealing Grade |
Gore®, GYLON®, Sigma®, Tesnit® and Klinger® are trademarks of their respective owners. Peflon is an independent manufacturer of equivalent expanded PTFE sheet and supplies OEM / private-label customers worldwide.
FAQ
FAQ — Expanded PTFE Sheet
What is the difference between expanded PTFE sheet and regular PTFE sheet?
Expanded PTFE (ePTFE) is processed by bi-axial stretching to create a microporous, soft, conformable structure. Regular PTFE sheet is dense and rigid. ePTFE is preferred for gasket and sealing applications because it conforms to imperfect flange faces; rigid PTFE sheet is preferred for machined parts.
Can expanded PTFE sheet be used for food contact?
Yes. Our food and pharma grades are made from non-toxic virgin PTFE and qualify under FDA 21 CFR 177.1550. Documentation is supplied with the lot.
What temperature and pressure range does ePTFE sheet handle?
Continuous service from cryogenic temperatures up to about +260 °C. Pressure rating depends on flange design and gasket factor — our engineering team can recommend the right thickness and density for your bolt load.
What sheet sizes and thicknesses are stocked?
Standard rolls 1500 mm × 1500 mm or 1500 mm continuous, thickness 0.5 mm – 6 mm. Custom dimensions and die-cut gaskets available on request.
Is Peflon ePTFE compatible with Gore GR®, Garlock GYLON® or Flexitallic Sigma®?
Yes — Peflon Expanded PTFE Sheet is widely used as a cost-effective replacement for these major brands. See the cross-reference table above for typical match-ups.
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