| Raw Material | Outgassing (Levels) | Notes |
| Viton | Low | High chemical resistance, manufacturing processes may reduce emissions. |
| Silicone | Low to Medium | May emit siloxanes, especially at high temperatures. |
| Urethane | Medium | May emit volatile organic compounds (VOCs), especially with heat exposure. |
| Nitrile (NBR) | Low to Medium | Generally low emissions, but can vary with material additives. |
| Neoprene | Low to Medium | May emit some chemicals, but at relatively low levels. |
| EPM/EPDM | Low | High resistance to emissions, typically does not release significant amounts. |
| Butyl | Low | Known for its airtight properties, minimal emissions of unwanted gases. |
| SBR | Low | Generally low emissions, but can vary based on formulation. |
| Natural Rubber | Low to Medium | May emit organic compounds, particularly under certain conditions. |
| Polyurethane | Medium | Can emit VOCs under certain conditions. |
