EESeal® FilterSeals EMI Filter inserts for connectors are an easy retrofit compared to bulky adapters, filtered connectors, and other traditional EMI Filters. Our EESeal® EMI filters (and Transient Suppressors) are made of resilient silicone rubber that is quick and easy to install, even in the field. Their patented construction allows them to survive even extreme environmental abuse. And by using just your finger tip, you can retrofit install an EESeal® FilterSeal EMI Filter Insert in your connector in just seconds unlike the bulky EMI Filter adapters, filter connectors, and other EMI Filters of the past.

Silicone Rubber Construction

  • Virtually “invisible” once installed, EESeal® FilterSeal EMI Filter Inserts for connectors are made of the same super-resilient material used in the interface of high-reliability, ruggedized military connectors.
  • Download a Detailed Briefing about EESeal®‘s unique construction and fit.

30-Second Installation

EESeal® FilterSeal EMI Filter inserts for connectors are better retrofit EMI filters than filter adapters or other types of EMI Filters and are easily installed and removed in the field by non-expert personnel, without special tools.

Adapts to Real World Abuse

  • Adds an environmental seal to the host connector (and does not corrupt existing seals!)
  • Adapts to real-world variations & stress commonly associated with connectors (misaligned and bent pins, severe shock and vibration, rough handling, contamination, etc.)
  • Withstands an onslaught of MIL-STD and DO-160C mechanical and environmental conditions, such as vibration, shock, salt-spray, thermal-cycling, etc.
Mosaic image of several shapes and sizes of the EESeal EMI Filter Insert.
This diagram shows the DSub-25 EESeal Close Up.
Click to Enlarge

Don't Take Our Word For It...

Skolnik – ESD & EMI Demonstration
Skolnik technical Training Institute uses EESeals in their class demonstrations to show how fast and effective EMI and ESD issues can be mitigated with an EESeal® from Quell. See how it works for yourself in this short video.

EESeal® EMI Filter inserts can be Custom Made to Fit in Any Connector and are smaller, lighter, and more easily installed than filtered connectors, filter adapters, and other types of EMI Filters.

  • MIL-C-38999, MIL-C-26482, MIL-C-5015, MIL-C-83723, ARINC, Lemo, MDM, DSubminiature and custom connectors too!
  • Custom pin assignments-allows use of a variety of capacitor values, MOVs, and other components.
  • Custom labels and part colors available, and we can ID individual parts or part types by label or color.
  • Discrete capacitors ranging from .5pF to 1uF with voltage ratings from 25wvdc to over 1000wvdc are available, and you can add MOVs, resistors, and other components too.

EESeal Open Connector MIL-C-38999

EESeal® fits where nothing else can.

  • It adapts to badly misaligned/bent pins upon installation & during use
  • It is highly damage-resistant during installation, use & extraction

EESeal® creates & exploits silicone body compression.

  • Compression created & focused by:
    • Undersizing & off-setting pinholes
    • Oversizing outer diameter
    • Connector mating forces
  • Compression used to:
    • Change its shape to adapt to misaligned pins, ease installation
    • Force annealed gold-plated pin contacts against pins for a reliable re-usable connection
    • Ditto for edge contacts
    • Create an environmental seal
    • Mechanically isolate all components

EESeal Installed MIL-C-38999

You can see how the EESeal® adapts to mating forces within a connector by looking at an EESeal® that has been in a mated connector pair for some time. The top and bottom surfaces of the EESeal® will take a set into the positions it sees in the mated condition.

EESeal corks

Here you see the top of an EESeal® that now has the “cork” structure similar to the corks around each pin in the connector

EESeal bottles

And here is the bottom surface of the EESeal®, now exhibiting the “bottle” feature around each socket in the mating connector

EESeal® Installed

Connector with EESeal close up.
EESeal in connector close up.