Expanded PTFE Sheet

In Stock Custom Sizes FDA Available

Expanded PTFE (ePTFE) is a microporous, highly compressible form of PTFE. It combines the outstanding chemical resistance of standard PTFE with a unique soft, flexible structure that conforms perfectly to irregular flange surfaces — sealing at very low bolt stress without creep or cold flow.

-260°C ~ +260°C

Temperature Range

207 bar

Max Pressure (3000 PSI)

pH 0–14

Chemical Resistance

Temperature Range	-260°C to +260°C
Operating Pressure	Vacuum to 207 kg/cm² (3000 PSI)
Max Sheet Size	1520mm × 1520mm (60" × 60")
Available Thickness	0.5 / 1.0 / 1.5 / 2.0 / 2.5 / 3.0 / 4.0 / 5.0 / 6.0 / 7.0 mm
pH Range	0–14 (except molten alkali metals & elemental fluorine)
Safety Standard	FDA 21 CFR 177.1550 Compliant

Zero cold flow under load

No curing or bake-out needed

Resists all common chemicals

No aging — stores indefinitely

FDA-compliant grades available

Soft & conformable to any surface

Applications

Chemical Processing Food & Beverage Pharmaceutical Pump & Valve Steam Systems Cryogenic

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Available Sizes

Standard sheet dimensions (Thickness × Width × Length). Custom sizes available on request.

0.5mm1520 × 1520 mm

1.0mm1520 × 1520 mm

1.5mm1520 × 1520 mm

2.0mm1520 × 1520 mm

2.5mm1520 × 1520 mm

3.0mm1520 × 1520 mm

4.0mm1520 × 1520 mm

5.0mm1520 × 1520 mm

6.0mm1520 × 1520 mm

Need a custom thickness or size? Contact us for a quotation.

Technical Performance

Tested to international standards — every batch verified for sealability, compressibility, and resilience.

🌡️

-260°C ~ +260°C

Temperature Range

Operating range

⚡

0.06 ml/hr

Sealability (0.8mm)

ASTM F37B

📐

63.6%

Compression Ratio

ASTM F36 — 0.8mm sample

↩️

≥8.8%

Elastic Resilience

ASTM F36

Property	0.8mm Sample	2.0mm Sample	Test Standard
Sealability	0.06 ml/hr	0.17 ml/hr	ASTM F37B
Compressibility	63.6%	63.4%	ASTM F36
Elastic Resilience	8.8%	9.1%	ASTM F36
Stress Relaxation	16.3%	37.1%	ASTM F38

Why Expanded PTFE Sheet?

ePTFE sheet outperforms conventional gasket materials in the most demanding sealing applications.

⚙️ Universal Chemical Resistance

Withstands virtually all chemicals across the full pH range (0–14) — including acids, alkalis, solvents, and oxidizers. Only molten alkali metals and elemental fluorine can affect it.

🧊 Wide Temperature Window

Rated from -260°C (cryogenic / LN2 environments) to +260°C continuous service. Suitable for liquid nitrogen, steam, thermal oil, and high-temperature chemical processes.

🔒 Zero Cold Flow / Creep

The expanded microporous structure eliminates cold flow and creep under bolt load. Seals maintain integrity indefinitely without re-torquing — unlike conventional PTFE.

🏭 Instant Seal at Low Stress

Highly compressible at 63%+ compression ratio. Conforms to irregular, damaged, or warped flange surfaces even at low bolt stress — no compound mating required.

✅ No Cure / No Bake-Out

Ready to use straight from the sheet. No curing cycle, no bake-out procedure, no waiting. Reduces downtime and installation labor significantly.

🍽️ FDA & Food-Grade Ready

Complies with FDA 21 CFR 177.1550. Available in USP Class VI grades for food, pharmaceutical, and ultra-pure water applications. No contamination, no particles.

Expanded PTFE Sheet