In the design of electronic enclosures, IP and EMI sealing can be achieved with two separate gaskets:
- IP gasket that protects against dust and water
- EMI gasket that prevents electromagnetic interference from passing through the enclosure
However, there is an alternative solution that simplifies the structure and reduces the number of components: a hybrid gasket. A hybrid gasket combines EMI shielding and IP sealing in a single profile, allowing one component to perform both functions.
A hybrid gasket is a good solution when:
- You want to minimize the number of components
- The enclosure does not have two separate grooves or space for two different gaskets
Why are hybrid gaskets becoming a trend?
Electronic devices are becoming smaller, more integrated, and their EMC requirements are increasing. At the same time, assembly needs to remain as simple as possible.
Hybrid gaskets enable:
- Compact enclosures
- Faster assembly
- Fewer components
- Reduced supply chain risks
- A smaller BOM list
Strong performance for most applications
Typical properties of hybrid gaskets, depending on material, structure, and profile:
- EMI attenuation: 30–130 dB depending on frequency
- Durability: moisture, UV, chemicals, dust, fire
- Temperature range: -40 … +100 °C
- IP protection: IP54–IP67
Examples of hybrid gasket structures
A hybrid profile may consist of:
- Silicone core + conductive fabric
- EPDM + metal mesh
- Two‑component profiles where one part creates the IP seal and the conductive section provides EMI contact
- Conductive elastomers; silicone‑ or fluorosilicone‑based materials with added conductive metal particles or wires for excellent EMI/RFI shielding
- Various profiles, O‑rings, and die‑cut flat gaskets that combine both IP and EMI functions in a single piece
Hybrid gaskets offer a modern, cost‑effective solution when you want to combine EMI shielding and IP sealing in a single component. They do not replace all separate gasket combinations, but in many applications they can be a viable alternative, especially when the design requires low weight, simplicity, and efficient assembly.
Contact our sales team for more information!