DEUTSCH DTS 21N series

Mil Spec Hermetic Connectors

TE’s extensive offering of MIL-DTL-38999 standard hermetic connectors in series I, II, III and IV provide a high degree of performance where most resilient connectors fail.

More than 28,000 standard configurations. With more than
55 years of experience in the hermetic manufacturing business, TE offers a wide variety of connectors for a multitude of applications. Our experienced engineers and vertically-integrated manufacturing teams are ready to design and build special custom hermetics as needed. Hermetic termination styles include solder cups, eyelets, PC tails, weld tabs and crimp termination. 


Standard configurations


Years of experience


  • More than 28,000 standard configurations of MIL-DTL-38999 standard series III hermetics
  • More than 55 years of experience
  • Design and build special connectors 


  • Modified flanges
  • Any termination style
  • Special materials (such as titanium)
  • High-temperature and cryogenic materials
  • Ability to withstand high pressure