Engineered to Connect. Built to Endure.
BoldX connectors deliver high-performance reliability in the toughest environments. Customizable, precision-built, and ready for what’s next.
Precision. Durability.
BoldX manufactures high-reliability circular and hermetically sealed connectors for the most demanding environments—from aerospace and defense systems to medical devices and high-voltage applications.
BoldX designs and manufactures high-reliability circular and hermetically sealed connectors for the most demanding environments—from aerospace and defense systems to medical devices and high-voltage industrial applications.
With deep expertise in glass-to-metal sealing, we deliver both standard and custom-built solutions designed for performance in high-pressure, high-vibration, and harsh environmental conditions. Our offerings include QPL-approved MIL-spec connectors (MIL-C-26500, MIL-C-83723, MIL-DTL-38999 Series I–III), as well as commercial equivalents and custom terminal seals, transducers, and scoop-proof designs.
We work with a wide range of materials and specialty alloys—including Kovar, Alumel, Chromel, and 52 alloy—and offer full plating and finishing options to meet the strictest design and corrosion resistance requirements.
Types of Connectors
Circular Connectors
Versatile Interfaces for Demanding Applications. BoldX offers a robust lineup of circular connectors engineered to meet the exacting standards of aerospace, defense, industrial, and medical environments. Our portfolio includes MIL-Spec designs such as MIL-DTL-38999 Series I, II, and III, MIL-DTL-83723 Series III, and MIL-DTL-26500, along with commercial equivalents to MIL-DTL-26482 and MIL-DTL-5015. Available in bayonet and threaded configurations, our circular connectors are built for high-vibration performance, EMI shielding, and compact integration. Whether for control systems, avionics, or instrumentation, these connectors ensure reliable signal and power transmission in the most mission-critical scenarios.
Hermetically Sealed Connectors
Leak-Tight Seals. Long-Term Protection. Our hermetic connectors are manufactured with precision glass-to-metal sealing technology that delivers exceptional performance in controlled or harsh environments—from deep sea to deep space. Designed for environments where outgassing, humidity, and pressure stability are mission-critical, these connectors meet or exceed military specifications for leak resistance, shock, salt spray, and vibration. With options in stainless or cold-rolled steel and contact finishes including gold over nickel-iron, each connector is engineered to maintain integrity under vacuum, high voltage, or corrosive conditions.
Customized Connectors
Tailored Engineering for Unique Requirements. When off-the-shelf won't cut it, BoldX delivers. Our custom connector solutions are built to meet the unique mechanical, environmental, and electrical demands of your application. From specialty terminal seals and high-voltage configurations to scoop-proof or sub-miniature designs, we work closely with your engineering team to prototype and manufacture connectors that integrate seamlessly into your system. We also support thermocouple and flex print contact types, plating and material variations, and custom mountings to meet your exact specifications.
FAQS
Yes. BoldX is a qualified U.S. manufacturer of hermetically sealed, glass-to-metal circular connectors for MIL-spec and custom applications. We support aerospace, defense, industrial, and medical markets with fast turnaround and compliance to MIL-C standards.