| 1 Short periods 2 Swells 3 Less than 20C 4 Less than 30C 5 Less than 100C 6 Medium concentration |

| Bioprene® Marprene® | Sta-Pure Silicone | Neoprene | Butyl | PVC | Fluorel® | Chem.Sure® |
Halowax oil |
| n | n | n |
| y |
|
Heptane |
|
|
|
|
|
| y |
Hexaldehyde |
| y | y | y |
|
|
|
Hexamethane diamine |
|
|
| y |
|
|
|
Hexane | n | n | y | n |
| y | y |
Hexyl acetate |
|
|
|
|
| n |
|
Hydraulic oil | y | n | y | n |
| y | y |
Hydrazine |
| n | y | y |
| n |
|
Hydriotic acid |
|
|
|
| y | y |
|
Hydrobromic acid | y | n | y | y | y | y |
|
Hydrochloric acid, cold | y | y | y | y | y | y | y |
Hydrochloric acid, conc |
|
|
|
|
|
| y |
Hydrochloric acid, hot | y | n | n | n |
| y |
|
Hydrocyanic acid | y | y | y | y | y | y |
|
Hydrofluoric acid, cold | y | n | y | y | n | y | n |
Hydrofluoric acid, hot | n | n | n | n | n | y |
|
Hydrofluorosilicic acid |
| n | y | y |
| y |
|
Hydrogen gas | y | n | y | y |
| y |
|
Hydrogen peroxide | n | y |
| n | n | y | y |
Hydrogen sulphide, dry | y | n | y | y | y | n |
|
Hydrogen sulphide, wet | y | n | y | y | y | n |
|
Hydroquinone | n |
|
|
|
| n |
|
Hypochlorous acid | y |
|
| y | y | y |
|
|
|