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PTFE Chemical Resistance Chart

PTFE (Teflon) is the gold standard for chemical resistance — virtually inert to all chemicals. Used in gaskets, seals, bearings, and linings for the most demanding applications.

827 chemicals tested 20°C & 50°C data
965
Excellent (A)
16
Good (B)
0
Limited (C)
0
Not Recommended (D)

Resistance by chemical class

Most rows rated A or B
Alcohols and glycols 100 %; Alkalis 100 %; Amines and nitrogen compounds 100 %
Fewest rows rated A or B
Vegetable and animal oils, fats, essential oils 100 %; Salts and salt solutions 100 %; Phenols 100 %
All rated rows, by rating
A 98 %, B 2 %, C 0 %, D 0 % (981)

Chemical classes were assigned by this site, not by the source. Mixtures and trade products without a clear class are not counted.

PTFE: Resistance by chemical classMineral acids: A 98 %, B 2 %. Organic acids: A 100 %. Alkalis: A 100 %. Salts and salt solutions: A 100 %. Oxidising agents and halogens: A 94 %, B 6 %. Alcohols and glycols: A 100 %. Phenols: A 100 %. Ketones and aldehydes: A 91 %, B 9 %. Esters and ethers: A 100 %. Amines and nitrogen compounds: A 100 %. Aromatic hydrocarbons: A 100 %. Fuels, mineral oils and aliphatic hydrocarbons: A 99 %, B 1 %. Vegetable and animal oils, fats, essential oils: A 98 %, B 2 %. Halogenated hydrocarbons: A 93 %, B 7 %. Foods and beverages: A 100 %.Mineral acids (63)Mineral acids: A 98 % (62)A 98 %Mineral acids: B 2 % (1)Organic acids (64)Organic acids: A 100 % (64)A 100 %Alkalis (22)Alkalis: A 100 % (22)A 100 %Salts and salt solutions (198)Salts and salt solutions: A 100 % (198)A 100 %Oxidising agents and halogens (63)Oxidising agents and halogens: A 94 % (59)A 94 %Oxidising agents and halogens: B 6 % (4)BAlcohols and glycols (58)Alcohols and glycols: A 100 % (58)A 100 %Phenols (14)Phenols: A 100 % (14)A 100 %Ketones and aldehydes (35)Ketones and aldehydes: A 91 % (32)A 91 %Ketones and aldehydes: B 9 % (3)BEsters and ethers (74)Esters and ethers: A 100 % (74)A 100 %Amines and nitrogen compounds (39)Amines and nitrogen compounds: A 100 % (39)A 100 %Aromatic hydrocarbons (14)Aromatic hydrocarbons: A 100 % (14)A 100 %Fuels, mineral oils and aliphatic hydrocarbons (78)Fuels, mineral oils and aliphatic hydrocarbons: A 99 % (77)A 99 %Fuels, mineral oils and aliphatic hydrocarbons: B 1 % (1)Vegetable and animal oils, fats, essential oils (48)Vegetable and animal oils, fats, essential oils: A 98 % (47)A 98 %Vegetable and animal oils, fats, essential oils: B 2 % (1)Halogenated hydrocarbons (70)Halogenated hydrocarbons: A 93 % (65)A 93 %Halogenated hydrocarbons: B 7 % (5)BFoods and beverages (46)Foods and beverages: A 100 % (46)A 100 %
A very good resistanceB good resistanceC limited resistanceD not resistant
Share of each rating at 20 °C among the source rows of a class. The number in brackets is the number of rated rows; a row is one chemical at one concentration. Classes with fewer than 8 rated rows are left out.
Showing 982 chemicals
Chemical Concentration 20°C 50°C CAS
Alkaline Exhaust Gases
Abgase, alkalisch
—AA—
Hydrogen Fluoride Exhaust Gases
Abgase, fluorwasserstoffhaltig
low concentrationAA—
Carbon Dioxide Exhaust Gases
Abgase, kohlendioxidhaltig
low concentrationAA—
Nitrous Exhaust Gases
Abgase, nitrosehaltig
low concentrationAA—
Hydrochloric Acid Exhaust Gases
Abgase, salzsäurehaltig
any concentrationAA—
Sulfur Dioxide Exhaust Gases
Abgase, schwefeldioxidhaltig
low concentrationAA—
Sulfuric Acid Exhaust Gases
Abgase, schwefelsäurehaltig
any concentrationAA—
Sulfur Trioxide Exhaust Gases
Abgase, schwefeltrioxidhaltig
low concentrationAA—
Acetaldehyd
40 %AA75-07-0
Acetaldehyd
technical gradeAA75-07-0
Acetamide
Acetamid
saturatedAA60-35-5
Aceton
—AA67-64-1
Acetonitril
—A*–75-05-8
Acetophenon
—AA98-86-2
Acetyl Chloride
Acetylchlorid
100 %A–75-36-5
Acetylen
100 %A–74-86-2
Acetylsalicylic Acid (Aspirin)
Acetylsalicylsäure
100 %AA50-78-2
Acrylnitril
—A–107-13-1
Adipinsäure
saturatedAA124-04-9
Akkusäure
38 %AA7664-93-9
Alanine
Alanin
—AA56-41-7
Allyl Acetate
Allylacetat
100 %AA591-87-7
Allylalkohol
96 %AA107-18-6
Allyl Chloride
Allylchlorid
100 %B*–107-05-1
Allyl Mustard Oil
Allylsenföl
—A*–57-06-7
Aluminum Hydroxide Acetate
Aluminium(hydroxid)acetat
aqueousAA139-12-8
Aluminum Ammonium Sulfate
Aluminiumammoniumsulfat
saturatedAA7784-26-1
Aluminiumchlorid
10 %AA7784-13-6
Aluminiumchlorid
saturatedA*–7784-13-6
Aluminiumchlorid
solidA*–7784-13-6
Aluminum Fluoride
Aluminiumfluorid
aqueousAA7789-18-1
Aluminiumhydroxid
—AA21645-51-2
Aluminiumnitrat
aqueousAA13473-90-0
Aluminiumoxid
solidAA1344-28-1
Aluminiumsulfat
10 %AA10043-01-3
Aluminiumsulfat
saturatedAA10043-01-3
Ameisensäure
3 %AA64-18-6
Ameisensäure
50 %AA64-18-6
Ameisensäure
98-100 %AA64-18-6
Glycine
Aminoessigsäure
10 %AA56-40-6
Ammoniumacetat
saturatedAA631-61-8
Ammoniumcarbonat
50 %AA10361-29-2
Ammoniumcarbonat
aqueousAA10361-29-2
Ammoniumchlorid
aqueousAA12125-02-9
Ammoniumchlorid
solidAA12125-02-9
Ammonium Dihydrogen Phosphate
Ammoniumdihydrogenphosphat
any concentrationAA7722-76-1
Ammonium Iron(II) Sulfate
Ammoniumeisen-(II)-sulfat
—AA7783-85-9
Ammonium Iron(III) Sulfate
Ammoniumeisen-(III)-sulfat
saturatedAA7783-83-7
Ammoniumfluorid
aqueousAA12125-01-8
Ammoniumfluorid
saturatedAA12125-01-8

* = estimated rating in the source, given without a temperature. L = risk of pitting or stress-corrosion cracking. Only chemicals with a rating for this material are listed.

PTFE Properties

Full Name Polytetrafluoroethylene
Brand Name Teflon® (Chemours)
Max Temperature 260°C (500°F)
Min Temperature -200°C (-328°F)

Common Applications

Gaskets & Seals

Universal chemical gaskets, valve seats, pump seals

Linings

Tank and pipe linings for aggressive chemicals

Bearings

Self-lubricating bearings and slides

Not Recommended For

PTFE may degrade when exposed to:

  • Molten alkali metals (sodium, potassium)
  • Elemental fluorine at high pressure
  • Certain fluorinated compounds at extreme conditions

Tip: PTFE cannot be melt-processed. For tubing and complex shapes, consider FEP which offers similar resistance.

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