MILITARY SOLUTIONS BY APM HEXSEAL: ADVANCED SEALING TECHNOLOGY SINCE 1947

APM Hexseal was established in 1947 in response to some of the most fundamental technical challenges that faced military engineers during WWII. Since then, our electronic and electrical device seals have protected aerospace and military control panels and the devices that depend on them from environmental contaminants, weather, spills, and even certain types of gases. Learn more about our first innovations, the major milestones in our history, and our extensive product line.

THE GENESIS OF INNOVATION

Our founder, Milton Morse—a self-taught engineer and inventor—started APM Hexseal on the strength of a vision. He created the original sealing switch boot to protect critical control panel switches used in military operations. The molded covering protected the electromechanical switch as well as the mounting panel from liquid and gas infiltration. Building on the success of the switch boots, Morse developed and patented a full product line of circuit breaker, potentiometer, and switch seals designed to function reliably over more than 100,000 actuations.

Morse and APM Hexseal helped develop the MIL-B-5423 military specification, now known as MIL-DTL-5423, which sets standards for the protection of military equipment. APM Hexseal continues to research and develop solutions to protect electrical components from unpredictable, adverse environmental challenges. These include our UL-recognized silicone sealing boots, designed to mate perfectly with most standard electrical switches, encoders, breakers, and rotary devices.

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