
The Full Range of MIL-DTL-38999 Series I, II, III, and IV Hermetic Receptacles — Plus Glenair Commercial Equivalents
The MIL-DTL-38999 Series I, II, III, and IV family of hermetic connectors are ideal for high-pressure/low-leakage applications in air, sea and space environments. Glenair is on the Qualified Product List (QPL) for all configurations of MIL-DTL-38999 Series I through IV pin and socket hermetic connectors. We also offer our D38999 type commercial part numbers for applications that do not require MS qualified products.
Same-Day Inventory
Because Glenair makes all its hermetic connectors in-house, including the machining of shells, molding of interfacial seals and firing of hermetic components, we can offer you outstanding availability on stock products and fast turnaround on special orders.
Reference
- Product Features
- Insert Arrangements (IAW MIL-STD-1560)
- Layouts and Pin Counts
- Material Specifications
CODE RED™ Lightweight Hermetic Sealing Connectors
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CODE RED™ Lightweight Hermetic Sealing Connectors"Mission-Critical" Hermetic Sealing with 1x10-7 Leak-Rate Performance, Lower Electrical Resistance and Lighter Weight Hermetically-sealed interconnects used in vacuum or high-altitude applications prevent moisture and other contaminants from damaging sensitive electronic equipment. Glass-to-metal hermetic sealing has been the gold standard in the aerospace and petrochemical industries for decades due to the strength and long-term durability of the materials used. But glass-to-metal seal hermetics come with a big price tag in both weight and electrical resistance. |
D38999 Series I Type Hermetic
- MIL-DTL-38999 Series I Type

SuperNine D38999 Series I Type Connectors and Cables
The Advanced-Performance MIL-DTL-38999 Series I Type Bayonet-Lock Connector
MIL-DTL-38999 Series II Hermetic
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MS27475 and 232-100-H0Wall Mount Hermetic ReceptacleMIL-DTL-38999 Series II |
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MS27476 and 232-100-H2Box Mount Hermetic ReceptacleMIL-DTL-38999 Series II |
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MS27477 and 232-100-H7Jam Nut Mount Hermetic ReceptacleMIL-DTL-38999 Series II |
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MS27478 and 232-100-H5Solder Mount Hermetic ReceptacleMIL-DTL-38999 Series II |
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232-103-H7Jam Nut Mount Hermetic Bulkhead Feed-ThruMIL-DTL-38999 Series II Type |
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232-103-H9Jam Nut Mount Hermetic Bulkhead Feed-ThruSav-Con® Connector Saver MIL-DTL-38999 Series II Type |
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232-100
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947-120Jam Nut Mount Hermetic Bulkhead Feed-Thru.062/.125in Panel MIL-DTL-38999 Series II Type |
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947-278Jam Nut Mount Hermetic Bulkhead Feed-ThruMIL-DTL-38999 Series II Type (MS27477Y) |
SuperNine Series III Type Glass-Seal Hermetic Connectors
- MIL-DTL-38999 Series III Type

Hermetic Connectors, Glass-to-Metal, and CODE RED Encapsulant-to Metal Sealing – SuperNine® Advanced Performance MIL-DTL-38999 Series III Type
Box, Wall, and Solder Mount Glass-Seal Hermetics for High-Pressure/Low-Leak Applications — Plus Special Crimp Contact and Lightweight CODE RED Hermetic Solutions all IAW MIL-DTL-38999 Series III and Series I Types
D38999 Series IV Type Hermetic
- MIL-DTL-38999 Series IV Type

SuperNine D38999 Series IV Type Connectors and Cables
From Vertical Launch Fire-Control, Tracking, and Multi-Target Missile Systems to Rugged Industrial Applications, Glenair "Better-than-QPL" SuperNine and DLA-Qualified D38999 Series IV Connectors are the Ultimate Solution for Positive and Reliable Breech-Locking Performance