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CeramTec’s pressure feedthroughs are terminated in NPT (National Pipe Thread) fittings or other threaded fittings to allow for easy bulkhead installation. The NPT (National Pipe Thread) pressure units are designed to be sealed using PTFE tape or other acceptable sealants. All other designs use an O-ring seal.

These Ceramaseal® components are usually used in pressure vessels or industrial environments. High vacuum applications are also common but note that the use of threaded connections in a vacuum system should be minimized. The small spaces between the threads can cause virtual leaks.
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National Pipe Thread (NPT) Pressure Feedthroughs

27 Ampere (A) Conductor Current Rating National Pipe Thread (NPT) Pressure Feedthrough
3.6 Ampere (A) Conductor Current Rating National Pipe Thread (NPT) Pressure Feedthrough (21322-01-A)

3.6 Ampere (A) Conductor Current Rating National Pipe Thread (NPT) Pressure Feedthrough
3.6 Ampere (A) Conductor Current Rating National Pipe Thread (NPT) Pressure Feedthrough (21322-01-A)

55 Ampere (A) Conductor Current Rating National Pipe Thread (NPT) Pressure Feedthrough
100 Ampere (A) Conductor Current Rating National Pipe Thread (NPT) Pressure Feedthrough (21152-01-A)

100 Ampere (A) Conductor Current Rating National Pipe Thread (NPT) Pressure Feedthrough
185 Ampere (A) Conductor Current Rating National Pipe Thread (NPT) Pressure Feedthrough (21143-01-A)

185 Ampere (A) Conductor Current Rating National Pipe Thread (NPT) Pressure Feedthrough
Description N/A CeramTec’s pressure feedthroughs are terminated in NPT (National Pipe Thread) fittings or other threaded fittings to allow for easy bulkhead installation. The NPT (National Pipe Thread) pressure units are designed to be sealed using PTFE tape or other acceptable sealants. All other designs use an O-ring seal.

These Ceramaseal® components are usually used in pressure vessels or industrial environments. High vacuum applications are also common but note that the use of threaded connections in a vacuum system should be minimized. The small spaces between the threads can cause virtual leaks.
Direct Current (DC) Voltage Rating1 N/A 5 kV N/A 20 kV N/A 20 kV N/A 10 kV N/A 25 kV
Conductor Current Rating N/A 27 A N/A 3.6 A N/A 55 A N/A 100 A N/A 185 A
Temperature Range N/A -269 to 450 ºC
Pressure at 20 Degree Celsius (ºC) Temperature N/A 4000 psig275 bar N/A 4000 psig275 bar N/A 4000 psig275 bar N/A 1000 psig69 bar N/A 1000 psig69 bar
National Pipe Thread (NPT) Fitting Material N/A 316 Stainless Steel
Conductor Material N/A Copper N/A 304 Stainless Steel N/A Copper N/A Copper N/A Copper
Insulation Material N/A Alumina Ceramic
Magnetic Material N/A true N/A false N/A false N/A true N/A true
Installation N/A National Pipe Thread (NPT)
Installation Size N/A 1/8 in N/A 1/8 in N/A 1/8 in N/A 3/8 in N/A 3/8 in
Additional Information N/A CeramTec has been designing and manufacturing high pressure, high reliability, ceramic-to-metal assemblies for more than 55 years.

The pressure feedthroughs in this section show capability in design for pressures up to 25,000 psig. In every design, the ceramic used is high-grade alumina or glass-ceramic, the NPT mounting members are 304 or 316 stainless Steel and the ceramic-metal braze materials are silver, silver-copper or copper.
Extreme/Custom Design N/A
  • Different fittings: cone and thread, NPT, straight thread and weld designs
  • Internal pressures from 1 x 10-10 torr to 40,000 psig
  • Instrumentation, multipin connector, coaxial, and thermocouple units are available
  • Precious metal braze alloys
Applications N/A A few of the many applications in which these pressure feedthroughs are commonly used are:
  • Undersea communications
  • Geothermal energy exploration
  • Power generation
  • Furnaces
New Products N/A
  • Power Plug feedthroughs mounted in NPT fittings
  • CeramTite™ glass-ceramic sealed high pressure feedthroughs
  • Tec-Seal™ high pressure feedthroughs
Accessories N/A Part Number - 11911-02-X
Description - Accepts wire up to 0.062 [1.6]
Material - Beryllium Copper
Type - 0.050 Crimp Contacts

Part Number - 7429-01-A
Description - Accepts wire up to 0.050 [1.3]
Material - Beryllium Copper
Type - 0.094 Set Screw Type Contacts

Part Number - 7332-04-A
Description - Accepts wire up to 0.094 [2.4]
Material - Beryllium Copper
Type - 0.094 Barrel Type Contacts

Part Number - 7332-07-A
Description - Accepts wire up to 0.154 [3.9]
Material - Beryllium Copper
Type - 0.154 Barrel Type Contacts

Part Number - 7332-06-A
Description - Accepts wire up to 0.250 [6.4]
Material - Beryllium Copper
Type - 0.250 Barrel Type Contacts

Part Number - 2840-05
Description - For 0.025" - 0.075" Crimp Diameters
Type - Crimp Tool 		N/A Part Number - 14419-02-A
Minimum Temperature - -55 ºC
Maximum Temperature - 125 ºC
Conductor Current - 55 A
Direct Current (DC) Voltage - 20 Kilovolt (kV)
Length - 8 ft
Cable Type - 10 AWG
Type - 20 kV Power Plug

Part Number - 11911-02-X
Description - Accepts wire up to 0.062 [1.6]
Material - Beryllium Copper
Type - 0.050 Crimp Contacts

Part Number - 7429-01-A
Description - Accepts wire up to 0.050 [1.3]
Material - Beryllium Copper
Type - 0.094 Set Screw Type Contacts

Part Number - 7332-04-A
Description - Accepts wire up to 0.094 [2.4]
Material - Beryllium Copper
Type - 0.094 Barrel Type Contacts

Part Number - 7332-07-A
Description - Accepts wire up to 0.154 [3.9]
Material - Beryllium Copper
Type - 0.154 Barrel Type Contacts

Part Number - 7332-06-A
Description - Accepts wire up to 0.250 [6.4]
Material - Beryllium Copper
Type - 0.250 Barrel Type Contacts

Part Number - 2840-05
Description - For 0.025" - 0.075" Crimp Diameters
Type - Crimp Tool 		N/A Part Number - 14419-02-A
Minimum Temperature - -55 ºC
Maximum Temperature - 125 ºC
Conductor Current - 55 A
Direct Current (DC) Voltage - 20 Kilovolt (kV)
Length - 8 ft
Cable Type - 10 AWG
Type - 20 kV Power Plug

Part Number - 11911-02-X
Description - Accepts wire up to 0.062 [1.6]
Material - Beryllium Copper
Type - 0.050 Crimp Contacts

Part Number - 7429-01-A
Description - Accepts wire up to 0.050 [1.3]
Material - Beryllium Copper
Type - 0.094 Set Screw Type Contacts

Part Number - 7332-04-A
Description - Accepts wire up to 0.094 [2.4]
Material - Beryllium Copper
Type - 0.094 Barrel Type Contacts

Part Number - 7332-07-A
Description - Accepts wire up to 0.154 [3.9]
Material - Beryllium Copper
Type - 0.154 Barrel Type Contacts

Part Number - 7332-06-A
Description - Accepts wire up to 0.250 [6.4]
Material - Beryllium Copper
Type - 0.250 Barrel Type Contacts

Part Number - 2840-05
Description - For 0.025" - 0.075" Crimp Diameters
Type - Crimp Tool 		N/A Part Number - 21094-01-A
Minimum Temperature - -55 ºC
Maximum Temperature - 125 ºC
Conductor Current - 75 A
Direct Current (DC) Voltage - 10 Kilovolt (kV)
Length - 8 ft
Cable Type - 8 AWG
Type - 0.154 Power Plug

Part Number - 11911-02-X
Description - Accepts wire up to 0.062 [1.6]
Material - Beryllium Copper
Type - 0.050 Crimp Contacts

Part Number - 7429-01-A
Description - Accepts wire up to 0.050 [1.3]
Material - Beryllium Copper
Type - 0.094 Set Screw Type Contacts

Part Number - 7332-04-A
Description - Accepts wire up to 0.094 [2.4]
Material - Beryllium Copper
Type - 0.094 Barrel Type Contacts

Part Number - 7332-07-A
Description - Accepts wire up to 0.154 [3.9]
Material - Beryllium Copper
Type - 0.154 Barrel Type Contacts

Part Number - 7332-06-A
Description - Accepts wire up to 0.250 [6.4]
Material - Beryllium Copper
Type - 0.250 Barrel Type Contacts

Part Number - 2840-05
Description - For 0.025" - 0.075" Crimp Diameters
Type - Crimp Tool 		N/A Part Number - 20956-02-A
Minimum Temperature - -55 ºC
Maximum Temperature - 125 ºC
Conductor Current - 100 A
Direct Current (DC) Voltage - 25 Kilovolt (kV)
Length - 8 ft
Cable Type - 6 AWG
Type - 0.250 Power Plug

Part Number - 11911-02-X
Description - Accepts wire up to 0.062 [1.6]
Material - Beryllium Copper
Type - 0.050 Crimp Contacts

Part Number - 7429-01-A
Description - Accepts wire up to 0.050 [1.3]
Material - Beryllium Copper
Type - 0.094 Set Screw Type Contacts

Part Number - 7332-04-A
Description - Accepts wire up to 0.094 [2.4]
Material - Beryllium Copper
Type - 0.094 Barrel Type Contacts

Part Number - 7332-07-A
Description - Accepts wire up to 0.154 [3.9]
Material - Beryllium Copper
Type - 0.154 Barrel Type Contacts

Part Number - 7332-06-A
Description - Accepts wire up to 0.250 [6.4]
Material - Beryllium Copper
Type - 0.250 Barrel Type Contacts

Part Number - 2840-05
Description - For 0.025" - 0.075" Crimp Diameters
Type - Crimp Tool
Features N/A Accelerators Cryogenics Fusion High Current High Energy Physics High Temperature High Voltage Laser Technology Microwave Nuclear Photovoltaic Semiconductor Equipment Superconductivity Ultra-High Vacuum
  • 1 Note that voltage ratings are based on a minimum of 250 volts DC per mil dielectric strength on the pressure side.