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Viton™ Resistance To Reduce Emissions

Viton Permeation Resistance Will 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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