Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Shelf life of products made out of different types of rubber [51].
| Rubber | Abbreviation | Recommended Storage Life Without Inspection (Years) | Storage Life Extension After Visual Inspection (Years) |
|---|---|---|---|
| Natural Rubber | NR | 5 | 2 |
| Butadiene-styrene | SBR | 5 | 2 |
| Nitrile | N | 7 | 3 |
| Nitrile-butadiene | HNBR | 7 | 3 |
| Acrylic | ACM | 7 | 3 |
| Chloroprene | C | 7 | 3 |
| Ethylene-Propylene | E | 10 | 5 |
| Viton™/FKM | V | 10 | 5 |
| Kalrez™/FFKM | KLZ | 10 | 5 |
| Silicone | S | 10 | 5 |
