SSP2551 O-Rings

nickel aluminum silicone emi o-rings | nickel graphite silicone emi o-rings

Product Categories

Nickel Aluminum Fluorosilicone EMI O-Rings

Specialty Silicone Products (SSP) molds and bonds conductive EMI RFI O-rings from SSP2551, a 72-durometer nickel-aluminum fluorosilicone that has been independently tested to MIL-DTL-83528.

EMI Shielding Levels

SSP2551 has a a typical shielding effectiveness of greater than 112 dB for the 20 MHz to 10 GHz frequency band (E-field). This EMI elastomer performs to 40 GHz and can be used for military electronics due to MIL-DTL-461F requirements, specifically Section 5.18 RE103, radiated emissions, antenna spurious and harmonic outputs (10 kHz to 40 GHz). 

Resists Galvanic Corrosion, Fuels, and Solvents

Because it resists galvanic corrosion, this EMI O-ring material is used in marine environments such as the decks of aircraft carriers, where flange gaskets are subjected to salt spray, jet fuel, de-icing fluids, exhaust fumes, and EMI. Because it is a fluorosilicone, SSP2551 resists fuels and solvents.

Molded and Bonded EMI O-Rings

SSP makes the molds and the ready-to-mold compounds for molded EMI O-Rings. For bonded EMI O-Rings, we extrude the cords, makes the tooling, and uses a bonding method that reduces the risk of EMI leakage and eliminates the “hard spot” found in other conductive gaskets.