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
| Permeation Rates1 for Selected Elastomers and Nylon 122 | ||||
| Material | Fuel C | 90% Fuel C, | 85% Fuel C, | Toluene |
| at 23ºC | 10% Ethanol | 15% Methanol | 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 | 7 |
| Viton® ETP | – | – | – | 14 |