These chemically inert connectors have a male 1/4-inch-28 UNF thread for connecting 1/16-inch or 1/8-inch O.D

Just slip the nut and ferrule over the tubing and finger tighten in any 1/4-inch-28 UNF threaded fitting. Offers a zero-dead-volume, leak-free seal. Ferrules are made of pure, virgin Tefzel (ETFE); no coloring agents are added. Male nuts are made of white acetal and nylon.

PTFE or Tefzel tubing to chromatography adapters. Easy-to-assemble, “no-flange, no-tool” system is rated at 1000 psi with PTFE tubing, higher with Tefzel