Fabric Over Foam EMI Shielding Gaskets
EMI shielding gaskets help protect electronic components against electromagnetic radiation that can interfere with how the product operates. Fabric over foam gaskets are fabricated uniquely in order to fit in designs where other types of gaskets won’t suffice.
Usually, FOF gaskets are constructed with electrically conductive fabric that’s been jacketed over a foam core, or else a multi-planar electrically conductive foam with z-axis conductivity.
Why choose fabric-over-foam gaskets?
These low-closure EMI shielding gaskets offer an EMI shielding solution where you need a softer surface with low compression. Primarily used in indoor applications, these gaskets prevent electromagnetic interference while fitting unique design specifications.
Features of fabric over foam gaskets
Fabric over foam gaskets offer a low compression set (less than 10% or 15%, depending on the type) and soft surface.
We work with fabric over foam gaskets from Chomerics, which offer shielding effectiveness >95db or >100db, depending on the type. Different types also offer higher temperature resistance, compartmental shielding, and more. We can help you pick the right product for your product’s design specifications.
When to use FOF gaskets
Use fabric over foam gaskets in delicate situations where you need cushioning and a low compression force. For example, this type of gasket is often useful in computer applications, as well as in telecommunications.
Discover our solutions from Parker Chomerics
SOFT-Shield 3500
Features:
- >100 dB shielding effectiveness 20 MHz to 10 GHz
- Low closure force for optimum performance
- Low compression set of less than 15%
Applications:
- Server faceplates and blade cards
- Electronic enclosures
- Consumer electronics
SOFT-shield 3700
Features:
- >100 dB shielding effectiveness from 100 MHz to 10 GHz
- Low closure force for optimum performance
- Low compression set of less than 10%
Applications:
- Between screws and chassis
- Panel seals
- Cover seals
- Door seals
Soft-Shield 4850
Features:
- 95 dB shielding effectiveness from 20 MHz to 10 GHz
- Low compression set of less than 15%
- Stable electrical performance (through resistance) after multiple closure cycles
- Excellent through resistance (< 30 milliohm @ 25% gasket deflection)
Applications:
- I/O panels, backplanes, connectors, access panels and rectangular/ square strip gasket seals
- Telecom Infrastructure rack and enclosure components
- Servers and desktop PCs
- LCD/PDP large screen TVs
Soft-shield 4850 strip
Features:
- Conveniently pre-cut strips are ready to apply
- 95 dB shielding effectiveness from 20 MHz to 10 GHz
- Low compression set of less than 15%
- Stable electrical performance(through resistance) after multipleclosure cycles
Applications:
- Panel seals
- Cover seals
- Grounding pads
- Door seals