Capillary Column Butt Connector-This device consists of a double-tapered ferrule and a stainless steel compression body with a threaded nut. Small (2.3 cm x 0.6 cm) and light (4.4 g with ferrule), it provides a gas tight seal without a change in column efficiency or inertness. The columns to be connected can have the same or different internal and external diameters. The butt connection is made inside the special double-tapered ferrule. The ferrule is then compressed within the housing. When the column ends are butted squarely and tightly together, the butt connector will not alter the chromatographic performance of your capillary columns.