Fluorosilicones are silicone-based elastomers that contain fluorine additions for improved oil and fuel resistance. Like other silicone compounds, they exhibit excellent stability over a wide range of temperatures, typically from -60° C to +200° C. Fluorosilicones also provide good compression set and resilience, and can withstand ultraviolet (UV) light, ozone, and chlorinated and aromatic hydrocarbons.
Specialty Silicone Products (SSP) supplies a complete line of fluorosilicones in a range of durometers (Shore A) and colors. Some SSP fluorosilicones contain fillers that impart or enhance certain properties. For example, SSP supplies particle-filled fluorosilicones for EMI shielding in industrial or military applications. SSP also supplies MIL-R-25988B and SMS AMS 3326 fluorosilicones.
Industrial Fluorosilicones for EMI Shielding
SSP’s industrial or general-purpose silicones for EMI shielding contain nickel-graphite particles. This fill material provides a reliable, cost-effective alternative to compounds that contain pure silver or silver-coated particles.
| Product | Fill | Durometer (Shore A) | Tensile Strength (psi) | Elongation (%) | Tear B (ppi/min) | Typical VR (ohm/cm) | Third-Party Shielding Data |
| SSP-502F-50 | Nickel-Graphite | 50 | 130 | 477 | 33 | .015 | 130 dB @ 100 MHz |
| SSP-502F-60 | Nickel-Graphite | 60 | 225 | 350 | 45 | .020 | 130 dB @ 100 MHz |
| SSP-502F- 80 |
Nickel-Graphite | 80 | 290 | 200 | 90 | .015 | N/A |
Military Fluorosilicones for EMI Shielding
For military applications, SSP supplies silver-aluminum fluorosilicones that meet the requirements of MIL-DTL-83528, Type D.
| Product | Fill | Durometer (Shore A) | Tensile Strength (psi) | Elongation (%) | Typical VR (ohm/cm) | QPL? | Third-Party Shielding Data? |
| SSP-2486-70* | Silver-Aluminum | 70 | 330 | 245 | .005 | Yes | 137.4 dB @ 80 MHz |
| SSP-550-45 | Silver-Aluminum | 45 | 185 | 350 | .002 | No | 137.8 dB @ 80 MHz |
| SSP-550-70 Passivated |
Silver-Aluminum | 70 | 300 | 250 | .006 | No | N/A |
*SSP-2486-65 is the only QPL listed product that meets all the requirements of Type D. The other materials have not been fully tested.
MIL-R-25988B and SMS AMS 3326 Fluorosilicones
SSP also supplies military and aerospace fluorosilicones that meet the requirements of MIL-R-25988B and SAE AMS 3326.
| Elastomer | MIL-R-25988B Callouts | Product Specifications | |||||
| Product No. | Type | Class | Grade | Durometer (Shore A) | Tensile Strength (psi) | Elongation (%) | Tear B (ppi/min) |
| SSP-267 | 2 | 1 | 40 | 40 | 1500 | 500 | 130 |
| SSP-338 | 2 | 1 | 50 | 50 | 1300 | 500 | 225 |
| SSP-083* | 2 | 1 | 60 | 60 | 1000 | 350 | 150 |
| SSP-100 | 2 | 1 | 70 | 70 | 1000 | 250 | 128 |
| SSP-372 | 2 | 1 | 80 | 80 | 800 | 170 | 102 |
| SSP-338A | 2 | 2 | 50 | 50 | 1300 | 500 | 225 |
| SSP-082 | 2 | 2 | 75 | 75 | 900 | 150 | 100 |
Choose Fluorosilicones from SSP
Specialty Silicone Products (SSP) manufactures fluorosilicones for EMI shielding in industrial and military products, and for military and aerospace applications that require MIL-R-25988B and SAE AMS 3326 materials. Here at our facility in Ballston Spa, New York (USA), we can manufacture 1000 ft. of materials per day – the equivalent of 600 standard 15” x 20” sheets.
To learn more, contact PGC.