Electrically conductive gaskets and extrusions
There are some applications that require a gasket that is non-negotiable. When we say non-negotiable what we mean is a gasket that cannot be changed because the certain requirements of the application dictate this type of material, such as a certain volume resistivity requirement. We often get customers who will ask for a gasket that is a more economical version, but they still require great performance. These customers typically have a little wiggle room in the performance arena. Oftentimes, these customers will be given a nickel coated graphite filled silicone product.
Performance of Nickel Coated Graphite Silicone Elastomer
Nickel coated graphite silicone rubber gaskets have a few things going for them. They feature all the great properties that silicone rubber offers. This includes good temperature resistance (160° C to -55° C), ozone resistance, and low compression set.
What is Special about Nickel Coated Graphite Silicone Gaskets?
The special thing about Nickel Coated Graphite Gaskets is they feature amazing EMI/RFI shielding performance that is often unmatched by even most super expensive pure silver EMI/RFI gasket alternatives.
One of the things we like the most about Nickel Graphite Silicone gaskets is, is the most able to be modified. It offers good EMI/RFI shielding performance- but can be offered in lower durometer options, and can have additives to make it more fire retardant for example.
The typical color of Nickel Coated Graphite Filled Silicone is a dark charcoal gray.
It is important to note that while nickel-coated graphite offers exceptional sealing and shielding properties, it is not covered in the military specification MIL-DTL-83528.
Typical Applications of Nickel-Coated Graphite-filled Silicone
- Telecommunication
- Defense electronics
- Aerospace
- Medical Devices
- Connectors
- Corrosive Environments
- Marine Applications
- Electric Vehicles
- Other commercial applications
Availability of Nickel Graphite EMI/RFI Gaskets
Many vendors we deal with have Nickel Coated Graphite Options:
SSP(Specialty Silicone Products), SSP-502-40-V0(UL 94V0), SSP502-40(40 Shore A), SSP502-30(30 Shore A)
SAS Industries, SAS Sealtron® 1026, SAS Sealtron® 1025, SAS Sealtron® 1024, SAS Sealtron® 1027, SAS Sealtron® 1023
Parker Chomerics, CHO-SEAL S6305, CHO-SEAL 6330, CHO-SEAL 6308, CHO-SEAL 6371, CHO-SEAL 6370
Overall, nickel-graphite filled silicone offers a good balance of EMI/RFI shielding, and sealing properties, and can be used from to make products ranging from a commercial EMI/RFI shielding gasket to defense electronics.
Nickel Graphite Silicone can be provided with PSA (pressure sensitive adhesive)*. Nickel Graphite Silicone is available in sheet form, die-cuts, extrusions, connector gasket, waterjet-cuts, and o-rings. For more information on nickel-coated graphic please contact sales@nedc.com.