Glass-fired hermetic vacuum connectors, also known as metal-glass hermetic feedthrough receptacles, are formed using high-temperature fusion bonding of metal and borosilicate glass. Relying on chemical bonding for permanent hermetic insulation, they eliminate rubber seals to prevent aging, outgassing, or leakage. These components serve as specialized wall-penetrating electrical interfaces for vacuum chambers and sealed enclosures. With a helium leak rate ≤1×10⁻⁹ Pa·m³/s, they withstand extreme conditions including ultra-high vacuum, wide temperature ranges, and pressure differentials, ensuring reliable power and signal transmission between the chamber interior and exterior. The product line covers multiple military standard-compatible series: compliant with MIL DTL 5015 (MX23/MX33), MIL DTL 26482, and MIL DTL 38999. It also offers KF/CF flange feedthroughs and miniature sensor fired bases. Shell materials include 304/316 stainless steel with gold-plated contacts. Installation options feature threaded wall penetration, square flanges, and round flanges. Backend configurations support solder cups or straight pins. Applications span vacuum equipment, pressure sensors, lithium battery sealing covers, aerospace testing, semiconductor machinery, and scientific instruments, supporting both mass production of standard models and custom development. **MX2 Series** (Threaded Wall Penetration, Compliant with MS3100A): MX23, MX2310SL 4P, MX2314S 6S, MX2316S 10P, MX2318 8P, MX231812S, MX232214P, MX232219S, MX232420P, MX232821P, MX232837S, MX233261P, MX2310SL 3S, MX2318 8S, MX232219P, MX232837P. **MX3 Series** (Square Flange, Compliant with MS3102A): MX33, MX3310SL 4P, MX3318 8P, MX331812S, MX332214S, MX332219P, MX332837S, MX333261S, MX3314S 6P, MX3316S 10S, MX332420S. **MIL DTL 5015 Military Standard Hermetic Models** (MS3100/MS3102): MS3100A18 8P, MS3100A2219S, MS3100A2837S, MS3102A1812S, MS3102A2214P, MS3100A10SL 4P, MS3100A16S 10P, MS3102A2837P, MS3100A2214P, MS3102A18 8S. **MIL DTL 26482** (MS3114E Hermetic Receptacle): MS3114E12 8P, MS3114E1610S, MS3114E2016P, MS3114E2027S, MS3114E2241P, MS3114E10 6S, MS3114E1412P, MS3114E1820S, MS3114E2219P, MS3114E12 4S. **MIL DTL 38999 Hermetic Receptacles**: D38999/20W11PA, D38999/20W15JC, D38999/40W15PB, D38999/40W19PA, D38999/20W23SC, D38999/40W11SA, D38999/20W17PB, D38999/40W21JC, D38999/20W13PC, D38999/40W25SC. **Miniature Sensor Hermetic Bases (Glass-Fired Base)**: M124 pin hermetic base, 5/8202 pin fired base, KF166 pin feedthrough, KF2519 pin feedthrough, CF3512 pin vacuum feedthrough.