Custom Glass-to-Metal Hermetic Connectors – Renhotec

Why Custom Hermetic Connector?

Off-the-shelf connectors frequently break down when subjected to severe thermal shocks, intense pressure, and aggressive operating environments. Bespoke engineering delivers the exact tolerances and structural integrity required for mission-critical success.

Standard Limitations

Standard plastic or elastomer seals degrade rapidly under severe thermal cycling, radiation, or aggressive chemical exposure.

Environmental Mismatch

Aerospace, subsea, and semiconductor applications require absolute helium leak tightness that standard components cannot guarantee.

Integration Bottlenecks

Unique housing shapes, specific pin counts (1 to 200+), and mixed signal/power layouts demand a ground-up design approach.

Custom Solutions by Application

Explore how Renhotec glass-to-metal sealing technology solves critical sealing and signal integrity challenges across demanding industries.

Aerospace & Security
01

Aerospace & Security

Designed for extreme secure environments, aerospace hermetic connectors must withstand intense mechanical vibration, severe thermal shock cycles from high-altitude transitions, and low atmospheric pressure. Maintaining an ultra-low helium leak rate is vital to protect internal avionics and secure systems from catastrophic failure.

02

Automotive R&D & Powertrain

A. Engine Test Benches & Dyno Test Cells

Facing explosion-proof bulkhead signal penetration across testing room walls, transient cylinder pressure and knock monitoring under extreme temperature and pressure fluctuations, as well as strict gas sealing requirements for hydrogen internal combustion engines and fuel cell test benches.

B. New Energy & Vehicle Electronics

High-voltage power battery systems, electric drive systems including IGBT/SiC power modules, and autonomous driving hardware such as LiDAR units and automotive cameras require high-reliability hermetic protection to prevent moisture condensation and insulation failure.

Automotive R&D & Powertrain
Vacuum & Semiconductor Equipment
03

Vacuum & Semiconductor Equipment

Semiconductor manufacturing tools operate under high vacuum and ultra-high vacuum environments where standard materials cause outgassing or micro-molecular infiltration. Customized vacuum chamber feedthroughs and specialized packages provide reliable electrical signal transmission while resisting aggressive chemical processing gases.

04

Sensors & Instrumentation

High-precision measurement instruments face strict spatial constraints. Internal sensitive micro-electronic chips and optical elements must be completely isolated from moisture, oxidation, and particulate contamination using hermetic sensor housings and micro-electronic sealing technology to maintain long-term drift-free accuracy.

Sensors & Instrumentation
Oil, Gas & Subsea
05

Oil, Gas & Subsea

Subsea exploration and downhole logging equipment are subjected to crushing hydrostatic pressures, highly corrosive chemical media, and extreme high-pressure/high-temperature (HP/HT) profiles. Renhotec heavy-duty hermetic sealing solutions and high-pressure feedthroughs protect power delivery and signal integrity in harsh marine depths.

06

Medical Devices

Implantable life-support electronics (such as pacemakers and neural stimulators) and large medical imaging systems (such as MRI high-pressure internal components) demand strict biocompatibility, long-term zero leakage to prevent body fluid corrosion, and high resistance to repeated sterilization cycles. Renhotec provides miniature hermetic terminals and implant-grade packaging.

Medical Devices

Our Customization Capabilities

From initial engineering review to rigorous leak testing and mass production, Renhotec delivers precise hermetic manufacturing solutions tailored to your specifications.

Customization Process

01

Requirements:

Define metrics.
02

Engineering Review:

Feasibility & materials.
03

3D Design:

CAD modeling.
04

Material Selection:

Shells & glass types.
05

Glass Sealing Design:

Thermal matching.
06

Prototype:

Sample fabrication.
07

Leak Testing:

Helium verification.
08

Mass Production:

Full manufacturing.

Customizable Parameters

Category Options
Shell Circular / Rectangular / Flange / Bulkhead
Contacts 1-200+ Pins
Pin Size Customized
Materials Stainless Steel / Kovar / Titanium
Glass Compression Seal / Matched Seal
Plating Gold / Nickel / Silver
Voltage 0.25KV-50KV
Frequency DC to RF
Leak Rate ≤1×10⁻⁹ mbar·L/s (customized)
Pressure Vacuum to high-pressure applications
Temperature -65°C to +200°C (customized)
Mounting Thread / Flange / Weld

Typical Custom Projects

Explore real-world examples of how our engineered glass-to-metal sealing solutions meet unique structural, electrical, and environmental demands.

Project 1

Customized Glass Hermetic RF Connectors for AESA Radar T/R Modules

AESA Radar T/R Modules Connectors

Application

High-frequency filter assemblies in airborne phased array radar T/R modules.

Requirement

The customer required a compact RF interconnect solution capable of operating in harsh aerospace environments while maintaining signal integrity and protecting internal circuitry from moisture and pressure variations.

Customization Solution

Based on the radar frequency requirements, we customized SMA and 2.92mm hermetic connectors with glass-to-metal sealing technology. The 4-hole flange design provided reliable mechanical fixation, while the hermetic structure ensured long-term protection for the RF module.

Key Benefits

  • Stable RF performance from microwave to millimeter-wave bands
  • Hermetic sealing for sensitive T/R module electronics
  • High vibration and shock resistance for airborne environments
  • Consistent performance across multi-channel radar systems

Start Your Custom Hermetic Connector Project

Share your application, operating environment and technical requirements. Our engineering team will recommend or develop a hermetic connector solution tailored to your project.