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SSP Fluorosilicones: Advantages, Applications, Types, and Specs

March 11, 2020

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.