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233-100-H2-Z1-11-05PN Glenair D38999 Series III Hermetic connectors are designed for pressurized and severe environmental applications. Glenair qualified MIL-DTL-38999 Series I, II, III, and IV connectors are built to endure harsh geophysical, medical, and military aerospace environments. Originally developed for military electronic applications, the connectors are specifically designed to prevent gasses and moisture from passing through pressure barriers, ensuring air-tight and gas-tight conditions. The importance of hermetic sealing in preventing corrosion resulting from dew point condensation and to prevent malfunctions in sensitive electronic systems. Glenair D38999 Series III Hermetic connectors are made of stainless steel, carbon steel, titanium, or Kovar, providing an effective barrier against gas ingress. With the use of fused glass-to-metal seals to ensure high-reliability in these connectors. The glass materials are selected according to their ability to form strong bonds with metal materials while offering excellent insulating properties. Glenair Hermetic connectors undergo rigorous examinations to optimise hermeticity, ensuring an effective and reliable product.