Need to pass fiber optic cable through a vacuum wall?? Check out BCE Fiber Optic Feedthroughs.
A very compact, fast responding electric heating element for liquids and gases for all clean, fuel cell, bio-med, laboratory, food, and pharmaceutical applications.
The advantages of printed circuit board mounted epoxy feedthroughs are "clear"!
Get a greater collection of temperatures from a single entry as multiple thermocouples are embedded in just one feedthrough.