Ace Glass 5840-60 Ace-Thred, #15 PTFE Coupling with Internal O-Ring for 10 mm Stir Shaft Seal

For coupling threaded columns together, or to end fittings with single O-Ring seal for leak-tight engagement with hand pressure and no significant size reduction in I.D. Size listed refers to inside diameter of threds. Use with Ace Glass 5820 and 5821 columns. Supplied with (2) O-Rings.