Bi-material EMI shielding gaskets ensure a high EMI shielding (due to the loaded silicone part) and a high ingress protection level (due to the neutral/soft silicone).
These gaskets are manufactured by extruding simultaneously two kind of silicone. The first is a standard or fluoro silicone and the second silicone is loaded with conductive particles (Ni/C or Ag/Al).
On the final EMI shielding gasket, the conductive silicone partially covers the gasket section. This manufacturing process makes the bi-material gasket resistant and soft.
These EMI shielding gaskets need to be assembled on a groove to ensure a high ingress protection (IP) level. Our range of bi material gaskets is developed to withstand the corrosion and aging problems encountered in aggressive environments: salt spray, electrolytic agents, oil, and solvents. Especially with fluorosilicone material).
Several gasket profiles are available. We help you to choose the best profile and dimensions depending on the dimension of your groove. Once we have the dimension of your groove (l x L x H), we propose as much as possible our standard. If a custom profile is required, we can also manufacture it (price is around 100€). Tooling are life time guaranteed, so no worry about tooling extra cost in the future.
About options on bi-material EMI shielding gaskets:
Standard profiles of an EMI shielding gasket (bi-material silicone):
Standard profile of bi material EMI shielding gasket looks that way. The conductive part is grey (Ag/Al), the neutral silicone is red.
Hook option on an EMI shielding gasket (bi-material silicone):
EMI shielding gasket with hook option for holding in the groove looks that way. The conductive part is black (Ni/C). The hook is on the right corner.
Ultrasoft design for EMI shielding gasket (bi-material silicone):
The conductive silicone can be extruded outside of the neutral silicone. This way, the final gasket is softer than the previous profiles we have seen.
The best way to get the right profile for your application is to contact us. We would be happy to help!