| SIC2050.0 | Gelest, Incorporated | Weakly reinforcing filler for silicone rubbers. Suitable for putty. | |
| SIS6962.0 | Gelest, Incorporated | Reinforcing filler for high tear strength silicone rubbers. | |
| SIS6964.0 | Gelest, Incorporated | Silicon dioxide, crystalline quartz powder. |
