Ace Glass 12714-20 2-Way Tubing Connector Variable Bore 1/4"-28 UNF

Variable bore (0.5 to 4mm OD) instant connection for use on rigid or flexible tubing without flanges. PTFE body and leak-free to 50 psi. Polypropylene caps have 1/4"-28 threads for joining with 5854, 5855 and 12724 series adapters or other miniature plumbing systems. Two types of seals are included, PTFE cones and fluoron elastomer o-rings.