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The miniature hermetic connector is a small square-flange connector with gold-plated contacts in a glass-sealed insert. It is designed for pressure housings and vacuum-tight compartments where the penetration itself must hold — the glass-to-metal seal does not rely on elastomers, so it suits long-duration and high-pressure duty.
Product Highlights
- Glass-to-metal seal: the contact insert is hermetically sealed — no elastomer aging, no permeation path over time.
- Square 4-hole flange: compact bolt-down footprint for flat walls and end-caps.
- Gold-plated contacts: low and stable contact resistance for signal and moderate power circuits.
- Sleeved pigtail exit: rear leads are individually sleeved for tidy, error-free wiring.
Key Specifications
| Contact arrangement | 4 pins (variants with other counts on request) |
| Contact plating | Gold-plated copper alloy |
| Seal type | Glass-to-metal hermetic insert |
| Shell material | Stainless steel / alloy steel per insert |
| Mounting | Square flange, 4 mounting holes |
| Termination | Sleeved pigtail leads |
| Leak rate | Per datasheet |
| Rated depth / pressure | On request |
Structure & Sealing
The flanged body bolts against the housing wall; the glass-sealed insert carrying the contacts is fused into the shell, so the penetration is metal-and-glass only. Leads exit the rear for solder or welded hook-up. Mating is via the corresponding plug with an elastomer face seal on the line side.
Applications
- Long-duration subsea instruments and data loggers
- Pressure-tight electronics compartments
- Battery and power modules in sealed housings
- Vacuum / over-pressure test chambers
Customization & OEM
- Contact count and arrangement to spec
- Weldable or solderable flange styles
- Lead length and termination style
- Shell and plating options
Packaging & Delivery
Each connector is shipped in an ESD-safe bag with a protective cap on the mating face, packed in a foam-lined carton. Lead time depends on configuration and quantity — contact us for a current schedule. DHL / FedEx / air / sea freight supported.
FAQ
Why choose hermetic over an O-ring connector?
A glass-to-metal seal does not age or take a set the way elastomers do — for long deployments it keeps its leak rate. For frequently-mated lines, an O-ring connector may be more practical.
Can it be welded to the housing?
Weldable flange styles are available; tell us your housing material for the compatible version.
What is the leak rate?
It is specified per insert type — request the datasheet for the figure that applies to your configuration.
Are other contact counts available?
Yes, the insert family covers several arrangements.