| Sostanza | Gomma butilica | Lattice | Polietilene clorurato |
Uretano |
PVC |
Nitrile |
Neoprene |
Altro |
| UDMH | 3 | 4 | 3 | 2 | 2 | |||
| Urea | 1 |
1 |
1 |
1 |
1 |
|||
| Valeronitrile | 1 |
4 |
3 |
|||||
| Varnish | 4 | 1 |
1 |
3 |
2 |
4 |
||
| Vegetable Oils | 1 |
1 |
3 |
1 |
3 |
|||
| Versilube | 1 |
1 |
3 |
1 |
1 |
|||
| Vinger Naphtha | 1 |
4 |
||||||
| Vinyl Acetate | 4 | 1 |
1 |
4 |
1 |
1 |
||
| Vinyl Chloride | 4 |
3 |
2 |
2 |
4 |
1 |
4 |
|
| Vinyl Halides | 3 |
3 |
4 |
3 |
3 |
|||
| Vinylidene Fluoride | 4 |
4 |
||||||
| Vinylstyrene | 3 |
4 |
||||||
| Vinyl-1-Cyclohexene, 4- | 4 |
2 |