Bi-material gasket for EMI shielding and Ingress Protection (IP)

These EMI shielding gaskets are made by extruding 2 kind of silicones on the same time. The result is a soft silicone gasket efficient for sealing (IP) and EMI shielding.

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Matériaux
The main part is a neutral silicone (red or blue). The conductive part of the EMI gasket is a loaded silicone (Ni/C or Ag/Al). A fluorosilicone can also be used for harsh environment.
Procédés de Fabrication
Extrusion, molding, splicing.
Charge disponible:
Most common load is Nickel and Graphite. For higher performance Ag/Al can be used.
Conductivité:
<0.12 ohm-cm
Prototypage:
Standard profiles of EMI shielding gasket are available for prototyping and testing.
Dureté:
The raw silicone hardness is 40 Shore A and 65 Shore A for the conductive silicone.
Options
Ultra soft gasket, anti-stretch, non-return lip/hook
Packaging
EMI sealed bags for jointed EMI shielding gasket or in reel for linear EMI gaskets.
Un projet, une demande ?

Description

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.

Standard Bi material EMI shielding gasket - Compelma
Standard Bi material EMI shielding gasket
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.

Hook option on a EMI shielding gasket - Compelma
Hook option on a EMI shielding gasket
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.

Ultrasoft bi-material EMI shielding gaskets - COMPELMA
Ultrasoft bi-material EMI shielding gaskets

The best way to get the right profile for your application is to contact us. We would be happy to help!

Comment pouvons-nous vous aider ?

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No items found.
Materials
The main part is a neutral silicone (red or blue). The conductive part of the EMI gasket is a loaded silicone (Ni/C or Ag/Al). A fluorosilicone can also be used for harsh environment.
Manufacturing process
Extrusion, molding, splicing.
Particle load
Most common load is Nickel and Graphite. For higher performance Ag/Al can be used.
Prototyping
Standard profiles of EMI shielding gasket are available for prototyping and testing.
Conductivité:
<0.12 ohm-cm
Hardness
The raw silicone hardness is 40 Shore A and 65 Shore A for the conductive silicone.
Options
Ultra soft gasket, anti-stretch, non-return lip/hook
Packaging
EMI sealed bags for jointed EMI shielding gasket or in reel for linear EMI gaskets.
Samples and Request

Description

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.

Standard Bi material EMI shielding gasket - Compelma
Standard Bi material EMI shielding gasket
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.

Hook option on a EMI shielding gasket - Compelma
Hook option on a EMI shielding gasket
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.

Ultrasoft bi-material EMI shielding gaskets - COMPELMA
Ultrasoft bi-material EMI shielding gaskets

The best way to get the right profile for your application is to contact us. We would be happy to help!

How can we help you?

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.