Nickel-Aluminum Silicone Shielding Elastomers
SSP-2529 is filled with nickel-coated aluminum particles for superior galvanic protection and effective EMI shielding in marine environments. Compared to other EMI elastomers, nickel-aluminum silicones provide the highest shielding effectiveness after long-term age testing. These particle-filled elastomers also have low transfer impedance and are extremely reliable as flange gaskets.
Galvanic Corrosion Resistance
SSP-2529 was tested for galvanic corrosion according to ASTM B117, a standard from ASTM International for operating a saltwater spray (fog) apparatus. Testing involved 168 hours of salt spray exposure at 95° F. The material under test was aluminum 6081 with a chromate conversion coating per MIL-DTL-5541F. The weight loss was 0.08%.
EMI Shielding Effectiveness
SSP-2529 was tested by a third-party laboratory according to MIL-DTL-83528F, a recent version of the MIL-DTL-83528F standard for elastomeric shielding gaskets. The minimum attenuation level was 93 dB at 10 GHz and the best-case attenuation level was 135 dB at 80 MHz. During product testing, a sample was subjected to controlled compression at 10%.
Compression deflection is a measurement of the force required to compress a material to a set amount. Testing for this SSP material was performed according to ASTM D75 Method A. Download the Compression Deflection Data for a chart with compressive stress [psi] vs. deflection [%].
CHO-SEAL 6502 Offset
SSP-2529 can be used instead of CHO-SEAL 6502. CHO-SEAL® is a registered trademark of Parker Chomerics. SSP also makes other CHOSEAL offsets.
Download the Data Sheet for product specifications such as tensile psi, elongation percentage, Tear B ppi, maximum volume resistivity, and specific gravity. Download the Shielding Report for complete EMI shielding effectiveness data from a third-party testing facility. A white paper is also available upon request.