Glenair GMDE Environmentally Sealed Micro-D Connectors with O-Ring
Glenair GMDE Environmentally Sealed Rear Panel Mount Micro-D Connectors with O-Ring
The Glenair GMDE Series is a rugged Micro-D metal shell connector designed for applications that require compact size, high-density interconnection and reliable environmental sealing. With an integrated O-ring sealing structure, the GMDE connector provides an effective solution for protecting equipment from water ingress, especially in sealed panels, tactical communication systems and rugged electronic enclosures.
Unlike standard M83513-type Micro-D connectors that can be difficult to seal against a bulkhead, the Glenair GMDE design uses a rear panel mount structure with an O-ring to simplify installation and improve sealing reliability. This makes it suitable for demanding aerospace, defense, industrial and outdoor electronic systems.

Key Features
| Feature | Description |
| Series | GMDE Glenair Micro-D Environmental |
| Connector Type | Micro-D metal shell connector |
| Mounting Style | Rear panel mount with O-ring |
| Available Styles | RMI and CMI |
| Contact Layouts | 9, 15, 21, 25, 31, 37, 51, 51-2, 67, 100 |
| Contact Type | Pin or socket |
| Contact Technology | TwistPin contacts |
| Mating Compatibility | Standard M83513 connectors |
| Environmental Protection | Nitrile O-ring and epoxy wire sealing |
| Standard Reference | MIL-DTL-83513 performance and interface dimensions; MIL-STD-810 immersion requirement |
| Wire Gauge Options | #24, #26, #28, #30 AWG |
| Shell Options | Aluminum or stainless steel |
| Finish Options | Cadmium, nickel, black anodize, gold, chem film, nickel-PTFE, passivated stainless steel |
RMI Style: Blind Tapped Rear Panel Mount
The RMI version is designed with blind tapped mounting holes and stainless steel inserts. It supports either #4-40 or M3 mounting screws, making it suitable for secure installation on equipment panels. The connectors are supplied with jackposts installed, and socket versions feature integral jackposts.
This option is ideal when strong mechanical retention and secure panel mounting are required.
CMI Style: Space-Saving Rear Panel Mount
The CMI version uses rear panel mount jackposts to attach the connector to the panel. This space-saving structure is suitable for compact equipment where panel space is limited, while still providing the sealing benefits of the GMDE O-ring design.
This version is a good choice for compact electronic modules, rugged control units and high-density connector layouts.
Applications
Glenair GMDE environmentally sealed Micro-D connectors are suitable for:
·Tactical communication boxes
·Aerospace and defense electronics
·Rugged industrial control systems
·Sealed electronic enclosures
·Outdoor communication equipment
·Bulkhead and panel-mounted interconnect systems
·Test and measurement equipment
·Compact high-reliability cable harness assemblies
Selection Guide

FAQ
What is the Glenair GMDE connector?
The Glenair GMDE is an environmentally sealed Micro-D metal shell connector designed for rear panel mounting with an O-ring sealing structure.
Does the GMDE connector mate with standard M83513 connectors?
Yes. The GMDE connector is designed to mate with standard M83513 Micro-D connectors.
What is the difference between RMI and CMI styles?
RMI uses blind tapped mounting holes for secure panel installation, while CMI uses rear panel jackposts for a more space-saving design.
What contact layouts are available?
The GMDE Series supports 9, 15, 21, 25, 31, 37, 51, 51-2, 67 and 100 contact layouts.
Why is the GMDE connector suitable for harsh environments?
It uses a nitrile O-ring and special epoxy wire sealing process to help meet immersion requirements and protect equipment from water ingress.
DataStorageIC is a distributors for Glenair,If you need to know more about and purchase GLENAIR products, you can consult DataStorageIC customer service or fill out the RFQ.



