Our Products Solve EMI Issues Fast

No Redesigns or Delays Required

EMI and RFI issues can bring development to a halt, often requiring costly redesigns and board spins, or extended lead times when sourcing and procuring new prototypes.

Quell’s EESeal® solutions help to eliminate these setbacks with instant, ruggedized filtering that installs directly into your existing connector with no hardware or layout changes.

EESeal® EMI filter inserts, gaskets, and transient voltage suppression (TVS) options address most EMI, RFI, ESD, and grounding challenges in a fraction of the time, cost, and physical space as traditional solutions.

Custom samples are designed and built in the U.S. and ship out in 1-2 days, helping engineers to reach compliance faster and keep mission-critical programs on track.

NOT SURE WHICH EESEAL SOLUTION IS RIGHT FOR YOUR CONNECTOR?

EMI Filter Inserts (EESeal®)

Primary Function: Instant/retrofit EMI and RFI suppression at the connector level using custom selected passive components tailored to your application.

Typical Use-Cases (Not Limited To):

  • Aerospace & Defense
  • Medical Electronics
  • Space Applications
  • Communications Systems

Compatible Connector Types (Not Limited To):

  • MIL-C-38999 / MIL-C-26482 / MIL-C-5015
  • D-Sub / Micro-D
  • ARINC, LEMO
  • Custom Connectors

Installation: Press-fit into connector cavity; no tools required.

EESeal+®

Primary Function: Custom connector insert that provides EMI filtering, transient protection, and grounding in high-frequency applications.

Typical Use-Cases (Not Limited To):

  • High-Frequency Applications (1–100GHz)
  • Embedded Systems
  • Mission-Critical Systems
  • Portable Equipment

Compatible Connector Types (Not Limited To):

  • MIL-C-38999 / MIL-C-26482 / MIL-C-5015
  • D-Sub
  • ARINC, LEMO
  • Custom Connectors

Installation: Press-fit into connector cavity; no tools required.

Transient and ESD Protection

Primary Function: Safeguard circuits from voltage spikes and electrostatic discharge (ESD)

Typical Use-Cases (Not Limited To):

  • Field Communication
  • High-Speed Data/Control Systems
  • I/O Lines
  • Aerospace & Defense
  • Space Applications

Compatible Connector Types (Not Limited To):

  • MIL-C-38999 / MIL-C- 26482 / MIL-C-5015
  • D-Sub / Micro-D
  • ARINC, LEMO
  • Custom Connectors
  • Custom I/O Plug-Ins

Installation: Press-fit into connector cavity; no tools required.

EMI Gaskets

Primary Function: Conductive or non-conductive gaskets that prevent EMI leaks from inside the connector; add a ground plane, selective pin-by-pin shorts or grounds, or just a simple gasket.

Typical Use-Cases (Not Limited To):

  • Enclosure Grounding and EMI Shielding
  • Panel-Mounted Instrumentation/Test Equipment

Compatible Connector Types (Not Limited To):

  • MIL-C-38999 / MIL-C-26482 / MIL-C-5015
  • D-Sub / Micro-D
  • Panel Mount / Circular
  • SOSA Connectors
  • Custom Form-Factors

Installation: Bonded via conductive adhesive or pressure fit.

Filtered Connector Solutions

Primary Function: EMI and transient protection solutions that are mounted in the rear of standard connectors.

Typical Use-Cases (Not Limited To):

  • EMC-Critical Applications
  • Military/Aerospace Equipment
  • Harsh Environment Systems
  • Industrial/Heavy Machinery
  • C-Filters and Pi-Filters

Compatible Connector Types (Not Limited To):

  • Custom-Built Connector Assemblies

Installation:  Integrated during cable assembly or connector build process. Note that custom assemblies may require longer lead times.

See Why Engineers Trust EESeal® in Over 14,000+ Applications

“Just over the phone, they identified what the problem was and made a solution for it. Quell was really incredible. Their expertise, their help, it was critical.”

Louis Gabriel
Blind Luck Racing

How it Works

The silicone elastomer body of EESeal® slides over a connector’s existing pin layout like a glove. Compression takes it from there: EESeals can change shape, adapt to misaligned pins, all while maintaining a snug environmental seal.

• 360º conductive silicone contact around each pin
• Multiple conductive silicone peripheral shell contacts
• Individual components and interconnections move as the body changes shape
• Body acts as conformal coat and electrical isolation for suspended components

Ready to Solve Your EMI Challenge?

Use the EESeal Builder to enter your connector details, define your filtering requirements, and generate a validated configuration.