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Permeation Data
| Material |
He |
O2 |
H2O |
N2 |
CO2 |
| Nitrile |
8 |
2.5 |
760 |
0.1 |
25 |
| EPDM |
25-30 |
16-18 |
- |
6-7 |
85 |
| VMQ |
250 |
75-480 |
8,000 |
200 |
2,000 |
| FVKM |
140 |
80 |
- |
40 |
400 |
| FKM |
9-22 |
1-2 |
40 |
0.05-0.7 |
5 |
| FKM* |
30 |
3 |
- |
2 |
- |
| FFKM (PFE) |
60-80 |
6-8 |
90-100 |
8-12 |
- |
| KEL-F |
- |
0.1 |
- |
0.1 |
0.5 |
| PTFE |
- |
0.04 |
- |
0.14 |
0.12 |
| Polyimide |
1.9 |
0.1 |
- |
0.03 |
0.2 |
Permeation Data for Various Polymers (unit expressed in 10-8 sccm-cm/sec-cm2-atm)
*Highly fluorinated compound
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