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Hermetic Seal Technology, Inc.
2150 Schappelle Lane
Cincinnati, OH 45240
Phone: 513.851.4899
Fax: 513.851.4817
All Categories > High Amperage Feedthrus  

High Amperage Feedthrus

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At HST, we engineer glass-to-metal seals/feedthrus in different specifications to meet varied high amperage needs. Pins for these feedthrus are made from hermetically sealable materials, such as alloy 52, stainless steel, molybdenum, copper-cored 52 alloy, and copper cored stainless steel.

Our high amperage seals are used in electric vehicles and high output batteries, as well as in several high current switching applications. Our engineers can design as well as build feedthrus to custom specifications, facilitating easy mounting.


Pin Materials

Alloy 52 and Copper Cored 52 Alloy

Stainless Steel and Copper Cored Stainless Steel

Other Materials Available Upon Request


Glass Formulation

Glass Sealing

Resistance Welding

Insulator Materials

Barium Alkali


Cabal 12 and other low silica glass

Corning 9010

Corning 9013

HST Custom Lithium Corrosion Resistant Glass

Soda Lime


Mount Type

Flange Mount
Nut Mount

Threaded Mount

Current Rating

Depending on center pin designed/application

Mounting Diameter

0.25” to 3.0”

Plating Options

And Many Others
Copper Plating

Electroless Ni Plating

Electrolytic Ni Plating

Hard Gold Plating

Pure Gold Plating

Silver Plating

Tin Plating

Industries Served






Less than 1 x 10-8 cc/sec helium leak rate (100% tested)

Production Capability

  • We have the ability to handle orders from ten parts to millions of parts
  • We can also do sample parts
  • HST can help you with free hermetic seal design and development to insurance you have a reliable and robust glass to metal seal


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