Centering Ring for Vacuum Fitting for 1/2" Tube OD

Centering ring for vacuum fitting for 1/2" tube od designed for use in ultra-high vacuum applications, these fittings have a center ring that is specifically designed for these applications. connected with a clamp and another quick-clamp fitting which provides easy access to the process line. these fittings are also known as nw, kf, and qf fittings.