Why EMI Gaskets Matter in High-Reliability Electronics
Electromagnetic interference (EMI) is one of the most underestimated threats to modern electronics. In high-reliability environments - such as aerospace, electric vehicles, medical devices, and defense systems - a single EMI leak can result in signal degradation, component failure, or regulatory rejection.
That’s why standard gasketing materials often fall short. They may seal - but they don’t shield, ground, or survive under compression, vibration, and thermal stress.
Our latest proprietary EMI gasket system is designed to solve those challenges with a high-performance construction that seals, shields, grounds, and survives.
A Simpler, More Reliable EMI Shielding Gasket
This next-gen gasket combines:
- A UL 94 V-0 flame-rated conductive silicone foam core
- A conductive pressure-sensitive adhesive (PSA) that bonds to metals, composites, and plastics
The result? An EMI gasket that provides up to 90 dB attenuation, maintains its seal in harsh environments, and grounds without the need for screws or clamping mechanisms.
Where This EMI Gasket Performs Best
Aerospace & Avionics
- Flight deck control panels
- Communication systems
- Equipment enclosures exposed to thermal cycling and vibration
Defense Systems
- Ruggedized radios and field electronics
- Mobile radar panels
- MIL-STD-461 compliant shielded compartments
Electric Vehicles
- Battery management system (BMS) enclosures
- Motor control and inverter systems
- Sensor housings exposed to extreme temperature variation
Medical Devices
- Imaging systems (MRI, CT)
- Wearable monitoring systems
- Signal-sensitive diagnostic equipment
EMI Gasket Performance Specs
| Property | Value |
| Shielding Effectiveness | Up to 90 dB (10 MHz–3 GHz) |
| Compression Force @ 25% | 10–15 psi |
| Adhesive Peel Strength (SS) | >50 oz/in |
| Operating Temp Range | -60°C to +200°C |
| Flame Resistance | UL 94 V-0 |
| Compression Set | <10% after 22 hrs @ 212°F |
| Construction | Closed-cell conductive foam + conductive adhesive liner |
Available Formats & Use Cases
This EMI shielding foam gasket is available in:
- Custom die-cut configurations from supplied CAD files
- Sheet stock for prototyping and CNC processing
- Kiss-cut or roll format with easy liner release
- Application-specific kits for defense, EV, and aerospace platforms
Request a Sample or Get Engineering Support
Need help validating shielding performance? Want to compare options before submitting to regulatory review? We can help.
Download Technical Data Sheet
Request a Sample Kit
Speak to an Engineer
Learn More
See our full range of engineered gaskets and seals
Explore all foam, rubber, and EMI shielding materials
How custom-engineered pads and tapes drive reliability
H-O Products helps engineering teams across medical, defense, industrial, and aerospace platforms build smarter, more reliable assemblies. If you’re building something that needs to shield, seal, and survive - we’re ready to help.