Feedthrough
GB
Glass Bushing / Feedthrough
Glass-to-metal sealed feedthrough for power and sensors that maintains high vacuum and airtightness — rated down to -253℃ for liquid hydrogen.
Features
- Special glass-to-metal seal for high vacuum tightness
- Cryogenic service (LNG, LH₂)
- Custom current rating, pin arrangement, insulation and housing metal
- Threaded / weld-in / flange types
Applications
LNG / liquid hydrogen (LH₂) tanks and terminals; power plants, vacuum systems and vacuum pumps; semiconductor and battery manufacturing; sensor feedthroughs for gas and cryogenic equipment; sealed connections for power and signal transmission.
Specification
| Sealing type | Glass-to-metal seal |
|---|---|
| Operating temperature | -253℃ ~ +100℃ |
| Pressure resistance | ≤ 100 bar |
| Vacuum leak rate | Up to 1.0 × 10⁻¹⁰ atm·cc/sec |
| Electrical rating | ≤ 20 kV, 400 A (power) / ≤ 3.0 kV (sensor) |
| Insulation resistance | ≥ 1000 MΩ (at 1,000 VDC) |
| Materials | Stainless steel, Inconel, nickel alloy, etc. |
| Pin options | Single-pin to multi-pin (customizable) |