FKM 1 - Fluoroelastomer copolymer

Clwyd referenceFKM 1
ASTM classificationFKM 1

Dipolymer (or copolymer) of hexafluoropropylene (HFP) and vinylidene fluoride (VF2/VDF). Copolymers are the standard type of FKMs showing a good all round performance in both chemicals and heat The fluorine content typically is 66 weight percent.

Typical applications
Advantages
Disadvantages
Available hardness range (Shore A)50 - 95
Upper continuous service temp.240°C
Min. temp. for sealing applications-15°C
Minimum non-brittle  temp. -20°C
Tensile strength (up to)20 MPa
Elongation at break (up to)300%
Price BracketLow
ASTM 1 OilExcellent
ASTM 2 OilExcellent
ASTM 3 OilExcellent
KeroseneExcellent
Liquid BExcellent
Liquid 101Excellent
Phosphate esterNone
KetoneNone
TolueneExcellent
Iso-octaneExcellent
MethanolNone
Acid (weak)Good
Acid (strong)Average
Base (weak)None
Base (strong)None
Hydrogen sulphideNone
SteamNone
OzoneExcellent
RadiationExcellent
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