Ext./int union 1/16, .25mm bore, SS

External/internal unions have male threads on one end and female threads on the other, for connecting a standard zero dead volume fitting to an existing tube which already has an external nut made up on it. Standard material is 300 series stainless. Also available in Hastelloy C and gold-plated stainless versions.

Select the union with the bore that matches the ID of the tubing. If the IDs are different, choose the union with a bore which matches the smaller tube bore.