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Resistance
Viton®
Permeation 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® 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 |
| Viton®
ETP |
-
|
-
|
-
|
14 |
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
Viton®
is a registered trademark of DuPont Performance Elastomers
PSP
Inc. at www.pspglobal.com
© 1997-2009, Problem Solving Products, Inc.
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