At Douglas Electrical Components, we specialize in designing hermetic connectors that cater to a range of applications. Our hermetically sealed connectors can be tailored to meet standard or customer-specific requirements, including MIL-spec configurations as well as generic options such as coaxial, D-sub, RJ-45, USB, M12 connectors, and more. By utilizing a backpotted connector with epoxy, we offer flexibility in materials and electrical interfaces, ensuring a secure hermetic seal.
Hermetic Circular ConnectorHermetic Rectangular Connector
PotCon® Series
Hermetic Bulkhead Connectors
Hermetically seal the connector of your choice for bulkhead mounting.
CircuitSeal™ Series
Hermetic Circuit Board Seals
Water-proof and hermetic electronic encapsulation of circuit board assemblies.
BPC Series
Hermetic Backpotted Connector
Industry-leading made-to-order hermetic bulkhead connector assemblies
RFW/PFW Series
Backpotted Connector Assembly
All the benefits of a hermetic connector with a custom mechanical interface.
MIL-DTL-24308
D-sub Connectors
Plug-and-play hermetic D-sub connector with reversible mounting.
MIL-DTL-83513
Micro-D Connectors
Hermetic Micro-D connectors with fully reversible mounting for vacuum applications.
MIL-DTL-38999
38999 Hermetic Connectors
Made-to-order hermetic MIL-DTL 38999 connectors and assemblies available in less time than a "standard" 38999 hermetic connector.
Portplate Series
Custom Hermetic Flange & Plate Assemblies
Multi-port hermetic assemblies accommodate any feedthrough configuration, with time and troubleshooting minimized.
Coax Series
Coaxial Feedthroughs
Hermetically seal coaxial connections for vacuum and pressure applications.
Industrial Circular Series
M8/M12/M23 Hermetic Connectors
Create a hermetically sealed electrical connection using an M8, M12 or M23 connector.
PTR Series
Push-through Feedthroughs
Change electrical connections without breaking hermetic seals
USB Feedthroughs
Hermetically sealed USB connections in the feedthrough housing you need.
Underwater Connectors
Hermetic connector solutions for marine applications
Hermetic Connector Types
We work closely with our customers to provide connector housings that adhere to mounting requirements and withstand challenging environmental conditions. Our offerings range from simple sealed connector assemblies to hermetic bulkhead connector mounting assemblies constructed of stainless steel, brass, specialty alloys, Ryton, or lightweight plastics.
By adopting our PotCon™ series ─ the vacuum industry’s benchmark for hermetic bulkhead connectors ─ you can streamline installation while maintaining a hermetic seal at the electrical connection and mechanical interface. Our expert team continually partners with clients to ascertain the most effective hermetic connector solutions, optimized for environmental conditions and interfaces, such as integrated wires, connectors, fiber optic cables, solder pins, and circuit board seals.
At Douglas Electrical, we take pride in our high-strength epoxy that guarantees a hermetic seal, fulfilling customers’ demands in terms of leak rates and pressures. Suitable for vacuum and pressure environments, our epoxy is utilized in applications exposed to hazardous liquids and gases. In turn, this versatile material accommodates submersible assemblies and situations requiring third-party certification for hazardous locations. Experience unparalleled design flexibility and performance with Douglas Electrical Components’ hermetic connectors.
Features
OPTIONS
Seals for high vacuum up to 15,000 PSI, and cryogenic temperatures up to +350°F.
Leak rates <1×10-9 cc-Helium/sec
Configuration versatility- back-to-back bulkhead connector style with customizable gender options, hybrid solutions having “pigtail” wire leads on one side and a rigid connector on the other
Hermetic/Waterproof backpotting or environmental sealing of commercial off the shelf & mil-spec connectors — standalone, with wiring, or fully integrated into harnessing
Copper conductors or optical fiber contacts
A wide variety of housing materials, including almost all metals and many plastics
Design flexibility and integration options that glass/ceramic-based seals cannot match
Leverage Douglas Electricals’ unmatched engineering expertise to provide you the right hermetic electrical connector for your application. Our long history of servicing a wide range of industries and our agency certification approvals allows us to meet the demands required by the most critical of hermetic sealing need. Don’t know where to start on your sealing or connecting needs? Contact us to learn more.
MECHANICAL INTERFACES
MIL-DTL-5015
MIL-DTL-38999
MIL-DTL-26482
MIL-DTL-24308
MIL-DTL-83513
MIL-DTL-32139
MIL-SPEC CONNECTORS
MIL-DTL-5015
MIL-DTL-38999
MIL-DTL-26482
MIL-DTL-24308
MIL-DTL-83513
MIL-DTL-32139
HERMETIC CIRCULAR CONNECTORS
M8 / M12 / M20 / M23 metric and other circular connectors
Sub-c
Push-pull
DIN
Coaxial
Submersible
HERMETIC RECTANGULAR CONNECTORS
Regular and standard density (HDM)
High density (HDD)
Micro-D
Nano-D
COAXIAL CONNECTORSCoaxial Connector Type Nominal Cable Impedance Withstand Voltage BNC 50Ω 500 VAC SMA 50Ω 500 VAC N 50Ω 1500 VAC Triaxial 50Ω 1500 VAC UHF Non-constant 500 VAC SHV N/A 3500 VAC MHV N/A 5000 VAC Non-constant THERMOCOUPLE CONNECTORS
Type J
Type K
Type E
Type T
For more information, view our Thermocouple Feedthroughs.
FAQ
What are hermetic connectors?
Hermetic electrical connectors create a gas and liquid tight connection that is safe to use in sealed environments from aerospace to automotive to other critical oil & gas applications. Our custom hermetic feedthroughs and hermetically sealed connectors allow power and signals to pass into sealed electronics enclosures and control systems. Douglas can manufacture a hermetically sealed connector to a variety of standards including MIL-STD-810. Contact our technical sales engineers with questions.
How does Douglas Electrical manufacture hermetic connectors?
Douglas Electrical Components will use a commercially off-the-shelf (COTS) connector that is non-hermetic and use a proprietary process to apply epoxy to create a hermetic seal. The low-outgassing epoxy adds design flexibility to customize the mechanical interface of the connector housing while also the flexibility to integrate virtually any electrical interface in the connector assembly.
Why do you need hermetic connectors?
Hermetic connectors can be used in both vacuum and positive pressure applications. In vacuum applications, the hermetic connector maintains the vacuum condition inside the chamber. The pressure is commonly measured as a leak rate. In other industries and applications, the environment dictates the requirement for a hermetic connector. It can be critical to make sure your connections are gas tight throughout the life of a program. Without a hermetic seal in your critical application, you are vulnerable to moisture ingress, explosions, and other catastrophic failure modes. Our hermetic feedthrough connectors provide the reliability, cost reduction, and ease-of-assembly that your operation requires. For over four decades our technology has been implemented in a wide variety of industries and applications, including military/defense, aerospace, space simulation, high radiation gloveboxes, x-ray systems, automotive, and other instrumentation and control systems. Our hermetic feedthroughs and hermetic electrical connectors meet a variety of primary and secondary explosion proof ratings, including UL, FM, IECEx, CSA, and ATEX.
What types of electrical connections can be integrated with a hermetic connector?
Epoxy creates a high degree of flexibility when integrating electrical connections into the connector assembly. Douglas can employ various connection types including pins, sockets, terminals, wires, cables, in-line connector assemblies, flex circuits, optical fibers, and more. Customer benefit from encapsulating the termination to make a true hermetic seal, creating strain relief for wires, and simplifying the integration into OEM designs.
What is a Circular Hermetic Connector?
A Circular Hermetic Connector is a specialized electrical connector designed to form a secure, impervious seal against moisture, gases, and contaminants. Also known as a hermetic circular connector, it ensures a complete barrier, making it essential for industries like aerospace and military. These connectors are available as custom hermetic connectors, offering variations in size and materials. Known for their liquid-tight sealing and featuring a crucial hermetic sealer, they excel in applications requiring reliable connections in challenging and demanding environments.
Circular Connector Types
Common aerospace circular connectors include:
MIL-DTL-38999
MIL-DTL-26482
MIL-DTL-5015
Common industrial circular connectors include:
Metric: M8, M12, M23
Push-pull connectors
How do Hermetic Rectangular Connectors differ from standard connectors?
Hermetic Rectangular connectors differ from standard connectors such as circular connectors based on their shape. Rectangular connectors produce a linear platform with various pin counts and sizes to produce enough variety to meet various application needs. Hermetic rectangular connectors are traditionally installed with two threaded screws to mate between the plug and receptacle; on the other hand, circular connectors are commonly threaded together to create the interconnect. Hermetic can be added to a rectangular connector through the process of backpotting or manufacturing a hermetic rectangular connector feedthrough.
Rectangular connector types
D-sub
Micro-D
Nano-D
At Douglas Electrical Components, we specialize in designing hermetic connectors that cater to a range of applications. Our hermetically sealed connectors can be tailored to meet standard or customer-specific requirements, including MIL-spec configurations as well as generic options such as coaxial, D-sub, RJ-45, USB, M12 connectors, and more. By utilizing a backpotted connector with epoxy, we offer flexibility in materials and electrical interfaces, ensuring a secure hermetic seal.
Hermetic Circular ConnectorHermetic Rectangular Connector
PotCon® Series
Hermetic Bulkhead Connectors
Hermetically seal the connector of your choice for bulkhead mounting.
CircuitSeal™ Series
Hermetic Circuit Board Seals
Water-proof and hermetic electronic encapsulation of circuit board assemblies.
BPC Series
Hermetic Backpotted Connector
Industry-leading made-to-order hermetic bulkhead connector assemblies
RFW/PFW Series
Backpotted Connector Assembly
All the benefits of a hermetic connector with a custom mechanical interface.
MIL-DTL-24308
D-sub Connectors
Plug-and-play hermetic D-sub connector with reversible mounting.
MIL-DTL-83513
Micro-D Connectors
Hermetic Micro-D connectors with fully reversible mounting for vacuum applications.
MIL-DTL-38999
38999 Hermetic Connectors
Made-to-order hermetic MIL-DTL 38999 connectors and
assemblies available in less time than a "standard" 38999 hermetic connector.
Portplate Series
Custom Hermetic Flange & Plate Assemblies
Multi-port hermetic assemblies accommodate any feedthrough configuration,
with time and troubleshooting minimized.
Coax Series
Coaxial Feedthroughs
Hermetically seal coaxial connections for vacuum and pressure applications.
Industrial Circular Series
M8/M12/M23 Hermetic Connectors
Create a hermetically sealed electrical connection using an M8, M12 or M23 connector.
PTR Series
Push-through Feedthroughs
Change electrical connections without breaking hermetic seals
USB Feedthroughs
Hermetically sealed USB connections in the feedthrough housing you need.
Underwater Connectors
Hermetic connector solutions for marine applications
Hermetic Connector Types
We work closely with our customers to provide connector housings that adhere to mounting requirements and withstand challenging environmental conditions. Our offerings range from simple sealed connector assemblies to hermetic bulkhead connector mounting assemblies constructed of stainless steel, brass, specialty alloys, Ryton, or lightweight plastics.
By adopting our PotCon™ series ─ the vacuum industry’s benchmark for hermetic bulkhead connectors ─ you can streamline installation while maintaining a hermetic seal at the electrical connection and mechanical interface. Our expert team continually partners with clients to ascertain the most effective hermetic connector solutions, optimized for environmental conditions and interfaces, such as integrated wires, connectors, fiber optic cables, solder pins, and circuit board seals.
At Douglas Electrical, we take pride in our high-strength epoxy that guarantees a hermetic seal, fulfilling customers’ demands in terms of leak rates and pressures. Suitable for vacuum and pressure environments, our epoxy is utilized in applications exposed to hazardous liquids and gases. In turn, this versatile material accommodates submersible assemblies and situations requiring third-party certification for hazardous locations. Experience unparalleled design flexibility and performance with Douglas Electrical Components’ hermetic connectors.
Features
OPTIONS
- Seals for high vacuum up to 15,000 PSI, and cryogenic temperatures up to +350°F.
- Leak rates <1×10-9 cc-Helium/sec
- Configuration versatility- back-to-back bulkhead connector style with customizable gender options, hybrid solutions having “pigtail” wire leads on one side and a rigid connector on the other
- Hermetic/Waterproof backpotting or environmental sealing of commercial off the shelf & mil-spec connectors — standalone, with wiring, or fully integrated into harnessing
- Copper conductors or optical fiber contacts
- A wide variety of housing materials, including almost all metals and many plastics
- Design flexibility and integration options that glass/ceramic-based seals cannot match
Leverage Douglas Electricals’ unmatched engineering expertise to provide you the right hermetic electrical connector for your application. Our long history of servicing a wide range of industries and our agency certification approvals allows us to meet the demands required by the most critical of hermetic sealing need. Don’t know where to start on your sealing or connecting needs? Contact us to learn more.
MECHANICAL INTERFACES
- MIL-DTL-5015
- MIL-DTL-38999
- MIL-DTL-26482
- MIL-DTL-24308
- MIL-DTL-83513
- MIL-DTL-32139
MIL-SPEC CONNECTORS
- MIL-DTL-5015
- MIL-DTL-38999
- MIL-DTL-26482
- MIL-DTL-24308
- MIL-DTL-83513
- MIL-DTL-32139
HERMETIC CIRCULAR CONNECTORS
- M8 / M12 / M20 / M23 metric and other circular connectors
- Sub-c
- Push-pull
- DIN
- Coaxial
- Submersible
HERMETIC RECTANGULAR CONNECTORS
- Regular and standard density (HDM)
- High density (HDD)
- Micro-D
- Nano-D
COAXIAL CONNECTORSCoaxial Connector Type Nominal Cable Impedance Withstand Voltage
BNC 50Ω 500 VAC
SMA 50Ω 500 VAC
N 50Ω 1500 VAC
Triaxial 50Ω 1500 VAC
UHF Non-constant 500 VAC
SHV N/A 3500 VAC
MHV N/A 5000 VAC Non-constant
THERMOCOUPLE CONNECTORS
- Type J
- Type K
- Type E
- Type T
For more information, view our Thermocouple Feedthroughs.
FAQ
What are hermetic connectors?
Hermetic electrical connectors create a gas and liquid tight connection that is safe to use in sealed environments from aerospace to automotive to other critical oil & gas applications. Our custom hermetic feedthroughs and hermetically sealed connectors allow power and signals to pass into sealed electronics enclosures and control systems. Douglas can manufacture a hermetically sealed connector to a variety of standards including MIL-STD-810. Contact our technical sales engineers with questions.
How does Douglas Electrical manufacture hermetic connectors?
Douglas Electrical Components will use a commercially off-the-shelf (COTS) connector that is non-hermetic and use a proprietary process to apply epoxy to create a hermetic seal. The low-outgassing epoxy adds design flexibility to customize the mechanical interface of the connector housing while also the flexibility to integrate virtually any electrical interface in the connector assembly.
Why do you need hermetic connectors?
Hermetic connectors can be used in both vacuum and positive pressure applications. In vacuum applications, the hermetic connector maintains the vacuum condition inside the chamber. The pressure is commonly measured as a leak rate. In other industries and applications, the environment dictates the requirement for a hermetic connector. It can be critical to make sure your connections are gas tight throughout the life of a program. Without a hermetic seal in your critical application, you are vulnerable to moisture ingress, explosions, and other catastrophic failure modes. Our hermetic feedthrough connectors provide the reliability, cost reduction, and ease-of-assembly that your operation requires. For over four decades our technology has been implemented in a wide variety of industries and applications, including military/defense, aerospace, space simulation, high radiation gloveboxes, x-ray systems, automotive, and other instrumentation and control systems. Our hermetic feedthroughs and hermetic electrical connectors meet a variety of primary and secondary explosion proof ratings, including UL, FM, IECEx, CSA, and ATEX.
What types of electrical connections can be integrated with a hermetic connector?
Epoxy creates a high degree of flexibility when integrating electrical connections into the connector assembly. Douglas can employ various connection types including pins, sockets, terminals, wires, cables, in-line connector assemblies, flex circuits, optical fibers, and more. Customer benefit from encapsulating the termination to make a true hermetic seal, creating strain relief for wires, and simplifying the integration into OEM designs.
What is a Circular Hermetic Connector?
A Circular Hermetic Connector is a specialized electrical connector designed to form a secure, impervious seal against moisture, gases, and contaminants. Also known as a hermetic circular connector, it ensures a complete barrier, making it essential for industries like aerospace and military. These connectors are available as custom hermetic connectors, offering variations in size and materials. Known for their liquid-tight sealing and featuring a crucial hermetic sealer, they excel in applications requiring reliable connections in challenging and demanding environments.
Circular Connector Types
Common aerospace circular connectors include:
- MIL-DTL-38999
- MIL-DTL-26482
- MIL-DTL-5015
Common industrial circular connectors include:
- Metric: M8, M12, M23
- Push-pull connectors
How do Hermetic Rectangular Connectors differ from standard connectors?
Hermetic Rectangular connectors differ from standard connectors such as circular connectors based on their shape. Rectangular connectors produce a linear platform with various pin counts and sizes to produce enough variety to meet various application needs. Hermetic rectangular connectors are traditionally installed with two threaded screws to mate between the plug and receptacle; on the other hand, circular connectors are commonly threaded together to create the interconnect. Hermetic can be added to a rectangular connector through the process of backpotting or manufacturing a hermetic rectangular connector feedthrough.
Rectangular connector types