SSP makes sheets, rolls, extrusions, and ready-to-mold compounds. Options include:
SSP makes the following types of materials as as sheets, rolls, and ready-to-mold compounds. We also make EMI extrusions and fabricate products like EMI gaskets and EMI O-rings.
SSP is a DLA listed manufacturer that makes electrically conductive elastomer materials the requirements of the MIL-DTL-83528 standard from the U.S. military. Many of our products are part of the DLA’s Qualified Product Lists (QPL). Find Type A, B, C, D, and K materials, including offsets to CHO-SEAL EMI shielding, for EMI military applications.
SSP makes nickel-plated aluminum filled silicones and flurorosilicones that are designed for corrosive environments with heavy salt spray, including military ships and marine applications. Salt Spray Test data is available for this corrosion resistant conductive elastomers.
SSP makes softer, electrically conductive silicones in durometers as low as 30 Shore A. These EMI silicones allow for lower enclosure forces and better sealing capabilities. Products include an offset to GORE GS2100, a discontinued conductive silicone rubber from W.L. Gore.
EMI shielding materials that use fluorosilicone as the base elastomer provide fuel and solvent resistance. Applications include jet fuels, de-icing fluids, and other harsh chemicals. These conductive elastomers include a QPL listed MIL-DTL-83528 material.
SSP has designed low outgassing conductive silicone materials for space and high vacuum applications. These low outgassing electrically conductive silicone materials are tested to ASTM595 via third-party laboratories. These electrically conductive silicone materials are also available as fabricated products.
These EMI silicones are extremely conductive elastomers where the lowest possible surface conductivity is required. They are SSP’s most electrically conductive silicone rubber materials.
UL94 V0 vertical burn tested conductive elastomers where flame retardant specifications along with EMI shielding and environmental sealing is required.
Conductive fabric reinforced shielding elastomer for maximum structural stability used in thin wall parts to prevent tearing.
SSP502-65 supports thinner, smaller, and lighter-weight designs. This EMI seal material also offers performance levels that are comparable to shielding silicones with silver-coated particles. SSP502-65 is cost-effective and, unlike silver-filled silicones, isn’t subject to fluctuating silver prices.
SSP2514-75 is a nickel coated graphite filled conductive EPDM based shielding elastomer. It is used when looking for excellent ozone and UV resistance along with good compression set and solvent resistance.
Download our EMI/RFI Shielding Materials Guide or our EMI/Silicones Catalog , or scroll to see the different types of EMI/RFI elastomers that we offer.
You can also see a breakdown of our most popular products by filler.
EMI/RFI elastomers are shielding materials that combine the advantages of rubber with the electrical properties of metals. An inert, synthetic elastomer, silicone offers thermal stability over a wide temperature range along with resistance to ozone, water, and sunlight. When filled with tiny metal or metal-coated particles, silicone compounds combine EMI shielding and electrical conductivity with environmental sealing.
The table below shows the relationship between filler type, electrical conductivity, and typical volume resistivity (VR) as measured in ohms per centimeter. Direct methods for measuring shielding effectiveness can be expensive and complex, so VR is a commonly-used method for indicating EMI shielding effectiveness indirectly. Note that typically, the fill material in EMI gaskets is pure silver, or a silver-plated or nickel-coated material.
Filler Type | Electrical | Typical VR (ohms/cm) |
Silver | Extremely Conductive | .0009 |
Silver-Aluminum | Super Conductive | .003 |
Silver-Copper | Super Conductive | .003 |
Silver-Glass | Very Conductive | .006 |
Nickel-Graphite | Conductive | .01 |
Carbon Black | Semi-Conductive | 8.0 |
Today’s electronic designers can specify alternative particle fills. Choices such as nickel-graphite cost significantly less, as the table below shows. Note the difference between silver, silver-aluminum, and nickel-graphite.
Filler Type | Cost |
Silver | $$$$$ |
Silver-Aluminum | $$$$ |
Silver-Copper | $$$$ |
Silver-Glass | $$$ |
Nickel-Graphite | $$ |
Carbon Black | $ |
RFI (Radio Frequency Interference) materials and EMI (Electromagnetic Interference) materials both serve to protect electronic devices from external interference or prevent devices from emitting unwanted signals. However, there are some distinctions between the two.
Frequency Focus:
Material Design:
Applications: