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Resistance
Viton™ Resistance To Reduce Emissions
Even
if high temperatures or aggressive fluids are not involved, Viton may be specified because it has good resistance to permeation. In automotive,
chemical processing, and other industries, Viton FKM helps minimize
fugitive emissions to meet Clean Air Act requirements.
Permeation
Rates1 for Selected Elastomers and Nylon 122 |
Material |
Fuel
C
at 23ºC |
90%
Fuel C,
10% Ethanol |
85%
Fuel C,
15% Methanol |
Toluene
at 40ºC |
NBR
(33% ACN) |
669 |
1028 |
1188 |
- |
HNBR
(44% CAN) |
230 |
553 |
828 |
- |
Fluorosilicone |
455 |
584 |
635 |
- |
Nylon
12 |
5.5 |
24 |
83 |
- |
Viton
GLT |
2.6
|
14 |
60 |
- |
Viton
AL |
0.8 |
6.7 |
32 |
- |
Viton
A |
0.8 |
7.5 |
36 |
49 |
Viton
GFLT |
1.8 |
6.5 |
14 |
- |
Viton
B |
0.7 |
4.1 |
12 |
- |
Viton
GF |
0.7 |
1.1 |
3.0 |
7 |
1
Average Permeation Rate for ASTM Standard (g x mm) (m2 x days)
2 Mathematically normalized to 1 mm thicknesses using data from tests
described in ASTM E96-53T
Key: 1 = Excellent 2 = Fair to Good 3 = Poor 4 = Not Recommended
Next:
Selecting the
Type of Viton That Is Best For You
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