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PTFE
Filled PTFE
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PTFE & Filled PTFE

PTFE & Filled PTFE Selection Guide
PTFE & Filled PTFE
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Virgin PTFE :

The chemical resistance of PTFE is excellent. It is stable in most aggressive and corrosive media, exceptions being liquid or dissolved alkali metals, flourine and other extremely potent oxidisers.


PTFE is not chemically resistive to:-
► Moltem or dissolved Alkali metals – Sodium, Potassium, Rubidium, Cesium, Francium
► Fluorine Gas
► Fluorine compounds & complexes at elevated temperature

Fillled PTFE Compositions :

The resistance of Filled PTFE compositions to number of Chemicals is given below. In general carbon and glass filled compositions give better performance in chemical service.

A = Excellent, B = Fair,
C = Unsatisfactory.

Chemical Filler
Carbon/Graphite Glass Bronze
Acetaldehyde A A A
Acetone A A A
Aluminium Sulphate A A B
Ammonium chloride A A C
Ammonium hydroxide A B C
Aniline A A C
Benzene A A A
Brine A A A
Bromine (anhydrous) C B C
Carbon Disulphide A A A
Chloroacetic acid A A B
Chlorobenzene A A A
Chloroform A A A
Chromic acid B B C
Citric acid A A A
Diethyl ether A A A
Ethylene glycol A A A
Fatty acids A A A
Ferric Chloride A A C
Ferric sulphate A A C
Fluorosilicic acid B C C
Formic acid A A A
Freon (liquid) A A A
Hydroboric acid A B C
Hydrochloric acid A B C
Hydrocyanic acid A B C

Hydrogen sulphide(solution)

A C C
Lead acetate A A C
Maleic acid A A B
Mercury salts A A C
Molasses A A B
Naptha A A B
Naphathalene A A B
Nickel salts A A A
Nitric acid C B C
Nitro benzene A A A
Phenol A B A
Phosphoric acid A A C
Picric acid A A A
Pyridine A A C
Salicylic acid A A B
Silver nitrate A A C
Sodium carbonate A A A
Sodium hydroxide A B A
Sodium nitrite A A A
Sodium peroxide B A C
Sodium silicate A c A
Sodium sulphide A A C
Starch A A A
Sulphuric acid B A C
Tallow A A A
Tannic acid A A A
Tartaric acid A A A
Trichloroethylene A A B
Zinc chloride A A C

A = Excellent, B = Fair,
C = Unsatisfactory.