Hermetic/Epoxy Sealed Connectors

Amphenol Aerospace
Part Number Information
Part #: Price/Availability:
PT1H Buy Now
PT02H Buy Now
PT07H Buy Now
Epoxy Buy Now

High reliability and increased versatility best describe Amphenol MIL-DTL-38999, Series III circular connectors. Originally designed for the harshest of environments and most demanding of applications, Amphenol MILDTL- 38999 Series III, Tri-Start connectors continue to evolve in pace with the needs of an ever-changing market.

Amphenol Tri-Start connectors can be configured with a number of application specific technologies like High Density HD38999, Dualok, Filters, Hermetics, PC Tails, Fiber Optics, Flex, CLUTCH-LOK, Fail Safe, and contacts. Flexibility aids in design optimization through the combination of different technologies within a common, time-tested, harsh environment connector body.


    • Leak rate of 1X10-7 cc He/sec or less
    • Fused glass insert in stainless steel shell
    • Operating Frequency: 0-500 MHz
    • Insulation Resistance: 1000 m ohms at 25°C
    • Dielectric Withstanding Voltage: Center to outer 500 VAC RMS at sea level
    • Contact Resistance: Center and outer at 1 amp, 55 millivolts max. voltage drop at 25°C.
    • Leak rate less than 1X10-5 cc He/sec
    • Same epoxy as used on EMI filter connectors
    • Maintained after temp cycling, 5 cycles -55 to +125°C
    • Custom designs available


  • Military & Commercial Aviation
  • Military Vehicles
  • Missiles & Ordnance
  • C4ISR
  • Space Applications
  • Harsh Environments