Feedthrough couplings and coupling plugs suit vacuum walls thicker than 1/4" and thinner than 1-1/4". Feedthrough couplings connect a tube to a chamber at a standard 1" baseplate port; coupling plugs are used to blank-off the feedthrough coupling.
Feedthrough Baseplate Coupling Plugs
NOTE: We recommend using a high quality thread lubricant on all stainless steel threads (sold below).