EMI Shielding for eVTOL Aircraft

Electric vertical takeoff and landing (eVTOL) aircraft need reliable shielding against electromagnetic interference (EMI) and dependable environmental sealing. Although the brushless DC motors that are used with eVTOL aircraft do not generate significant amounts of EMI, these motors are not altogether free from electronic noise. Moreover, because eVTOL development is coincident with 5G, eVTOL aircraft are expected to use densely-packed circuits that are susceptible to cross-talk and that [...]


EMI Silicone Added to QPL for MIL-DTL-83528, Type A

Specialty Silicone Products (SSP) is announcing that SSP-2569-65, an EMI silicone filled with silver-copper particles, is now part of the Qualified Product List (QPL) for MIL-DTL-83528, Type A. In a July 22, 2021, letter, the Defense Logistics Agency (DLA) informed us that SSP-2569-65, a 65-durometer conductive elastomer for shielding and sealing, passed qualification testing and has been added to QPL MIL-DTL-83528 for specific drawings and material types. The table below is an excerpt from the [...]


EMI/RFI O-Rings for Military Connectors

EMI/RFI O-rings for military connectors are donut-shaped gaskets that combine reliable environmental sealing with proven levels of shielding against electromagnetic interference (EMI) and radio frequency interference (RFI). They are not the same as flat, washer-style EMI gaskets. Rather, EMI/RFI O-rings are designed for tough environments where temperature, pressure, and tolerances could cause other types of EMI gaskets to fail.Military Connectors and Gasket Compression SetWith military [...]


The Silicone Shortage and Supplier Value

The continuing shortage of silicone rubber is forcing suppliers to have some challenging conversations with their customers. Whether it’s because of price, lead times, or a need to limit purchases, buyers are understandably concerned. Unfortunately, there aren’t any quick fixes. Today’s silicone shortage is expected to last for at least six months, and that’s without any additional supply chain disruptions. The news isn’t good, but it’s not all bad either. You [...]


Bonded EMI O-Rings for Reduced Costs and Improved Performance

Specialty Silicone Products (SSP) makes bonded EMI O-rings that provide shielding against electromagnetic interference (EMI), electrical conductivity, and environmental sealing. At our manufacturing facility in Ballston Spa, New York (USA), we extrude cords of shielding silicones, cut them to size, and then bond O-rings using a proven process with multiple quality control checkpoints. These products provide a cost-effective alternative to molded EMI O-rings and a better-performing choice than [...]