Tetrafluoroethylene-Propylene (AFLAS®)
Aflas Rubber seals,Aflas Rubber o ring,Aflas parts
This elastomer is a copolymer of tetrafluoroethylene (TFE)
and propylene. Its chemical resistance is excellent across a
wide range of aggressive media.
Heat resistance
• Up to approximately 232°C (450°F).
Cold flexibility
• Down to approximately -4°C (25°F).
Compatible with
• Bases.
• Phosphate Esters.
• Amines.
• Engine Oils.
• Steam.
• Pulp and paper liquors.
Not compatible with:
• Aromatic Fuels.
• Ketones.
• Carbon Tetrachloride.
2.3 Compound Selection
The base elastomer and the hardness of the finished product
are the main factors which enable a given compound to
resist heat, chemical and other physical influences.
The Parker compound code contains all the essential information
needed to identify the polymer family as well as
hardness.
The base polymer of the compound is identified by the
prefix letter:
A = polyacrylate
B = butyl or chlorobutyl
C = chloroprene
E = ethylene-propylene or ethylene propylene diene
G = styrene butadiene
L = fluorosilicone
N = acrylonitrile butadiene (nitrile),
hydrogenated and carboxylated nitrile
P = Polyurethane
S = silicone
V = fluorocarbon, perfluorelastomer, AFLAS
Y = epichlorohydrin
Z = exotic or specialty blends
The shore hardness range of a compound is indicated by the
suffix numbers, e.g. “70” means that the material’s hardness
is 70±5 Shore A.
The individual sequential compound number is shown
between the suffix and the prefix.
EXAMPLE: N0674-70 where
N = acrylonitrile-butadiene or simply nitrile
0674 = individual sequential compound identifier
-70 = nominal Shore A hardness
