Expanded PTFE Flat Gasket for Chemical Piping Flanges - Soft Multidirectional ePTFE Flange Seal
- 100% Expanded ePTFE Structure: Multidirectional fibrous web construction eliminates cold flow, creep relaxation, and bolt retightening.
- Exceptional Surface Conformability: Easily seals warped, pitted, or damaged flange faces under low bolt torque.
- Universal Chemical Resistance: Completely inert across pH 0–14 (except molten alkali metals and elemental fluorine).
- Wide Pressure & Temp Range: Operates from cryogenic -268°C up to +260°C (short term +315°C) and full vacuum to 200 bar.
- ASME & DIN Standard Sizes: Pre-cut IBC ring & Full Face gaskets, plus custom CAD die-cutting.
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High-Flexibility Expanded PTFE Flat Gasket (ePTFE Flange Seals)
Engineered for severe chemical processing environments, fragile piping joints, and uneven sealing surfaces, our expanded ptfe flat gasket seals are manufactured from 100% pure expanded fluoropolymer (ePTFE). Featuring a unique multidirectional fibrous microstructure created through specialized biaxial expansion, this soft, highly compressible material overcomes the traditional cold flow and creep relaxation limitations of standard rigid PTFE. It conforms instantly to pitted, warped, or delicate glass-lined steel flanges under low bolt torque, forming a tight, zero-leakage seal across extreme temperature boundaries from -268°C to +260°C and pressures from full vacuum to 200 bar.
Expanded PTFE Flat Gasket Technical Parameters
Verified performance properties tested under standard ASTM & DIN sealing guidelines.
| Property Parameter | Test Standard | Expanded ePTFE Value | Sealing Advantage & Benefit |
|---|---|---|---|
| Material Density | ASTM D792 | 0.85 - 0.95 g/cm³ (Micro-porous) | Soft micro-fibrous structure compresses easily under low bolt load |
| Compressibility | ASTM F36 | 46+/-5% | Fills microscopic surface defects, scratches, and flange unevenness |
| Operating Temperature Range | Thermal Boundary | -268°C to +260°C (Excursions to +315°C) | Cryogenic liquid nitrogen to high-temperature steam immunity |
Key Advantages of Expanded PTFE Flat Gaskets over Standard PTFE
Target Industrial Application Fields
Crucial fluid sealing across demanding chemical, pharmaceutical, and power processing plants.
Inquire Bulk Wholesale Pricing for Expanded PTFE Flat Gaskets
Need direct factory pricing for standard ASME/DIN ePTFE flat gaskets or custom CAD die-cut gaskets? Contact our engineering team today for fast factory quotations and free material samples within 24 hours.
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