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HiRel Connectors

Various electronic connectors and plugs.

HiRel Connectors' foundation is built on providing the most reliable electrical connectors and cable assemblies in the world, including hermetically sealed connectors designed for high reliability. They pride themselves on offering customers peace of mind, knowing they are utilizing HiRel Connectors' interconnect systems, which are a crucial part of military connectors in various applications.


Many products will outlast the life of the mission-critical systems into which they are incorporated, including aircraft, engines, spacecraft, and missiles.


Due to their superior design, HiRel's high reliability connectors have been integrated into the most critical areas of our customers’ final assemblies.


HiRel's patented self-locking mechanism has been incorporated into several MIL-DTL and European specification product lines, as well as our custom-designed plugs. This innovative self-locking system ensures that the connector will not back off under extreme vibration.

HiRel Connectors - High Reliability Solutions

Products are designed to applicable military and customer specifications, or custom designed by HiRel Connectors Inc. for your specific requirements. We are engineering oriented to supply what you need, not catalogue items you may have to design around.


Design assistance is yours for the asking and can result in new concepts of space and weight savings. If you have a problem, HiRel Connectors Inc. can provide a solution. HiReLCo manufactures connectors using plastic, elastomer, metal and composite technology for MIL-SPEC applications.


Since 1967, HiReLCo has been designing and manufacturing highly reliable, hermetically sealed connectors for interconnect applications. HiReLCo designs and manufactures connectors to exceed customer expectations, by utilising a full in-house production facility to ensure products are produced at the highest quality.


Our committed design/engineering team is ready to provide a quality solution for your interconnect application. Our hermetically sealed connectors are used in military, commercial and space environments by customers around the world.


HiReLCo’s environmental connector series is built to withstand the harshest applications in a vast variety of extreme conditions and surroundings. HiReLCo has incorporated its patented Self-Locking design into its plugs.


This design will ensure that the plug will not back off under extreme vibration. HiReLCo’s environmental series is the solution to your environmental interconnect problems.


HiReLCo takes its quality and expertise to the next level by providing a complete cable / harness division. Utilising HiReLCo‘s connector and back shell knowledge, we provide the answer to all your interconnect needs.


We are dedicated to creating the most reliable cables and harness assemblies available that are tested and proven to work under the most severe conditions. With our superb design capabilities coupled with manufacturing our connectors, HiReLCo can provide a better overall performance of our cable and harness assemblies.


HiRel Connectors High Density “H2D” series product line is a smaller and lighter alternative to the standard MIL-SPEC D38999 connectors. Our H2D series contains HiReLCo’s patented self-locking plugs while providing the same high-reliability of our larger connectors.


When space and weight are critical to our customers applications, our H2D connectors provide the solution. HiReLCo is the industry leader in producing the most durable and trusted connectors with extraordinary performance in regards to vibration, shock and insert retention.


Thus, HiReLCo was chosen as the key supplier for the NASA “Orion” Space Program.


HiReLCo utilises its vast connector knowledge and expertise and applies it to the Micro-miniature connector series. The HiReLCo Micro is an ideal candidate for applications with space and weight limitations. Typical applications range from military to commercial use.


HiReLCo is qualified to the MIL-DTL-83513 and also offer custom modifications to these standard configurations to enhance performance in their specific applications.


HiReLCo meets the challenge of providing interconnect systems that deliver clean data streams. We offer specialty/custom filtered connectors with integrated suppression and protection devices.


Many applications require protection from electrical surges, reduction of radiated signals and/or the reduction of susceptibility from external interference. Filter connectors that are manufactured at HiReLCo include: Pi, “C”,“L” and MOV (Metal Oxide Varistor).


Products are designed to applicable military and customer specifications, or custom designed by HiReL Connectors Inc. for your specific requirements. We are engineering oriented to supply what you need, not catalogue items you may have to design around.


Design assistance is yours for the asking and can result in new concepts of space and weight savings. If you have a problem, HiReL Connectors Inc. can provide a solution.


Products are designed to applicable military and customer specifications, or custom designed by HiReL Connectors Inc. for your specific requirements.


HIRELCO® manufactures backshells using aluminum, and stainless steel to more specialized materials such as kovar, inconel, and titanium. 


Backshell products include;  Straight Single Banded Termination ; 45deg Single Banded; 90deg Single Banded; Straight Double Banded; 90deg Doubel Banded; Micro-D Circular; Micro-D Eliptical; Strain Relief; and many more....


Custom Design and Manufacturing

HIREL Micro

Custom Design

OUR JOB IS TO CREATE YOUR VISION. WE CAN DESIGN ANY CUSTOM SOLUTION, INCLUDING HERMETICALLY SEALED CONNECTORS, FOR YOUR APPLICATION. 


- HIREL CONNECTORS INC. - 


Our products are tailored to meet applicable military specifications, or can be custom designed by HiRel Connectors Inc. to fit your specific requirements, including high reliability connectors and military connectors. 


We are engineering-oriented to supply exactly what you need, not just catalogue items that you may need to adapt to your needs. Design assistance is readily available and can lead to innovative concepts that save space and weight. If you have a challenge, HiRel Connectors Inc. can provide the right solution.

HIREL manufacturing

Custom manufacturing

HiRel manufactures high reliability connectors, including hermetically sealed connectors, using advanced plastic, elastomer, metal, and composite technology for various environmental applications. Our hermetic connectors, headers, and feedthroughs are crafted with the latest technology for glass, ceramic, steel, and aluminum use. 


The shell materials we offer range from aluminum and stainless steel to specialized options such as Kovar, Inconel, and titanium. 


For contact materials, we utilize everything from copper alloy to high-temperature and exotic thermocouple materials. HiRel provides flexibility by offering connectors supplied individually or cabled upon customer request. 


Additionally, we can incorporate integrated passive and active electronics into our products. We also offer dock-to-stock programs to streamline your procurement needs. Let us assist you with all your interconnect challenges.

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