PTFE Chemical Resistance Chart

PTFE (Teflon®) is the gold standard for chemical resistance. It handles nearly all chemicals, extreme temperatures, and is the premium choice for gaskets, seals, and linings in demanding applications.

500+ chemicals tested 20°C & 50°C data Premium material

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Excellent (A)

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Good (B)

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Limited (C)

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Not Recommended (D)

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Chemical	Concentration	20°C	50°C	CAS

PTFE Properties

Full Name Polytetrafluoroethylene

Trade Name Teflon® (DuPont/Chemours)

Max Temperature 260°C (500°F) continuous

Min Temperature -200°C (-328°F)

Density 2.1–2.3 g/cm³

FDA Approved Yes

Friction Lowest of any solid

Cost High (premium)

Common Applications

Seals & Gaskets

O-rings, flange gaskets, valve seats, pump seals

Linings & Coatings

Tank linings, pipe linings, non-stick coatings

Electrical Insulation

Wire insulation, connectors, high-frequency applications

⚠️ Limitations

While PTFE resists most chemicals, it has some limitations:

Molten alkali metals (sodium, potassium)
Fluorine gas at high temperatures
Some fluorinated solvents

Cold flow under load (creep)
Low wear resistance (soft material)
High cost compared to alternatives

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