| Material |
FKM: Fluoroelastomer
|
FVMQ: FluoroSilicone
|
HNBR: Hydrogenated Nitrile
|
|
Description
|
Excellent long term heat resistance and ageing. Excellent hot oil, aliphatic and aromatic hydrocarbon resistance. Not very elastic. High cost polymer.
|
Combines the high and low temperature advantages of silicone rubber with resistance to many harsh chemicals for use in the most demanding applications.
|
Outstanding physical properties combined with good mechanical properties at elevated temperature and excellent resistance to many chemically aggressive technical oils.
|
|
Hardness: Shore A (Hint)
|
40-90
|
40-80
|
50-90
|
|
Tensile Strength (1000psi)
|
2
|
2.0
|
3.5+
|
|
Tear Resistance
|
Good
|
Fair
|
Fair
|
|
Impact Resistance
|
Good
|
Fair
|
Good
|
|
Compression Set (Method B, %)
|
5 - 20
|
30 - 50
|
5 - 20
|
|
Electrical Resistance (ohms/cm2)
|
2 * 1013
|
1*1013 - 1*1014
|
2*1011
|
|
Low Temperature (°C)
|
-15
|
-60
|
-20
|
|
High Temperature (°C)
|
250
|
200
|
150
|
|
Intermittent High (°C)
|
300
|
225
|
165
|
|
Ozone (protected)
|
Excellent
|
Excellent
|
Good
|
|
Weather and Sunlight
|
Excellent
|
Excellent
|
Good
|
|
Gas Permeation
|
Excellent
|
Fair
|
Fair
|
|
Water
|
Good
|
Excellent
|
Fair
|
|
Acid/Base - dilute
|
Excellent
|
Excellent
|
Good
|
|
Acid/Base - concentrated
|
Excellent
|
Fair
|
Fair
|
|
Solvent - Aliphatic
|
Excellent
|
Good
|
Excellent
|
|
Solvent - Aromatic
|
Excellent
|
Fair
|
Fair
|
|
Oils and Gasoline
|
Excellent
|
Fair
|
Excellent
|
