Technical Info
Kalrez® perfluoroelastomer parts last longer and seal more effectively than other elastomers due to their exceptional chemical resistance and thermal stability.
Kalrez® parts can withstand attack by more than 1,800 chemicals, including many acids and amines that cause other elastomers to fail due to excessive swelling. Even after long-term exposure to temperatures up to 327°C, Kalrez® retains its elasticity and recovery properties better than other high-temperature elastomers.
| |
| CR |
EPM |
NBR |
FVMQ |
FKM (Viton®) |
FFKM (Kalrez) |
| 20 to 90 |
40 to 80 |
40 to 95 |
40 to 80 |
55 to 95 |
65 to 95 |
| 3,000 |
2,500 |
2,500 |
900 |
2,500 |
2,000 |
| G |
G |
G |
N |
G |
G |
| R |
VG |
N |
VG |
R |
E |
| G |
N |
G |
E |
E |
E |
| R |
N |
G |
E |
E |
E |
| G |
N |
E |
E |
E |
E |
| G |
R |
E |
E |
E |
E |
| G |
R |
E |
E |
E |
E |
| R |
N |
VG |
E |
E |
E |
| N |
N |
G |
E |
E |
E |
| R |
N |
VG |
E |
E |
E |
| N |
N |
R |
VG |
E |
E |
| G |
N |
VG |
E |
E |
E |
| R |
E |
VG |
E |
E |
E |
| N |
E |
R |
E |
E |
E |
| E |
E |
VG |
E |
E |
E |
| N |
G |
N |
N |
N |
E |
| N |
R |
N |
G |
VG |
E |
| G |
G |
R |
VG |
E |
E |
| G |
VG |
R |
R |
N |
E |
| N |
N |
R |
VG |
VG |
VG |
| 105°C |
135°C |
135°C |
200°C |
204°C |
327°C |
| VG |
G |
VG |
G |
VG |
G |
| yes |
no |
no |
no |
yes |
yes |
|
| E = Excellent, VG= Very Good, G= Good, R = Reasonable, N = Not recommended. Data has been drawn from DuPont Performance Elastomers and industry sources. Data is presented for use only as a general guide and should not be the basis for design decisions. |
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