1 9/16" Long Vacuum Tube Fitting-Straight Adapter 1/2" Tube OD x Butt-Weld Tube

19/16" long vacuum tube fitting-straight adapter 1/2" tube od x butt-weld tube 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.