High Amperage Feedthroughs

Power your high amperage applications with confidence using Hermetic Seal Technology’s precision-engineered feedthroughs. Contact us today to discuss your requirements and experience the difference with HST’s unmatched expertise!

Precision-Engineered Feedthroughs from Hermetic Seal Technology

At HST, we specialize in crafting glass-to-metal seals/feedthroughs tailored to meet diverse high amperage requirements. Our range of specifications caters to various needs, ensuring optimal performance and reliability in demanding applications. Pins for our feedthroughs are meticulously crafted from hermetically sealable materials including alloy 52, stainless steel, molybdenum, copper-cored 52 alloy, and copper-cored stainless steel.

Here’s why our high amperage feedthroughs stand out:

  1. Versatile Applications: Trusted by industries such as electric vehicles, high-output batteries, and high current switching applications, our seals deliver exceptional performance in demanding environments.
  2. Custom Design: Our team of engineers excels in designing and building feedthroughs to custom specifications, ensuring seamless integration and easy mounting for your specific application requirements.
  3. Precision Engineering: Each feedthrough undergoes rigorous quality checks to guarantee precision engineering and reliability, meeting the highest standards of performance.

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.


  • Brazing
  • Glass Formulation
  • Glass Sealing
  • Resistance Welding


  • Alloy 52 and Copper Cored 52 Alloy
  • Molybdenum
  • Stainless Steel and Copper Cored Stainless Steel
  • Other Materials Available Upon Request
  • Babal
  • Barium Alkali
  • Borosilicate
  • Cabal 12 and other low silica glass
  • Corning 9010
  • Corning 9013
  • HST Custom Lithium Corrosion Resistant Glass
  • Soda Lime
  • TA-23
  • Flange Mount
  • Nut Mount
  • Threaded Mount

Depending on center pin designed/application

  • 0.25” to 3.0”
  • Copper Plating
  • Electroless Ni Plating
  • Electrolytic Ni Plating
  • Hard Gold Plating
  • Pure Gold Plating
  • Silver Plating
  • Tin Plating
  • And Many Others
  • Less than 1 x 10^8 cc/sec helium leak rate (100% tested)
  • All HST seals are 100% leak tested to ensure quality and performance

Industries Served





Companies Using HST Seals

Quality Control

Industry News & Blog

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Contact Hermetic Seal Technology Today

Experience superior performance with HST’s High Amperage Feedthroughs. Crafted to meet diverse high amperage requirements, our glass-to-metal seals ensure reliability in demanding applications. Trusted by industries like electric vehicles and high-output batteries, our feedthroughs offer exceptional performance. Benefit from custom design expertise for seamless integration into your specific requirements. With meticulous precision engineering and rigorous quality checks, trust HST for reliability and precision. Contact us today!