Ace Glass 6513-34

<p><strong>Four Necks Reaction 2-4 L Flask Head, 29/42 </strong> </p> <p>Flat Flange, 4 Necks, with #7 Ace-Thred </p> <p>Four-neck, flat-flange head for use with 2,000-4,000mL 6511 ACE reaction flasks. Supplied with standard taper 29/42 reinforced outer center neck and two standard taper 24/40 reinforced outer joints in line, and a #7 Ace-Thred, internally threaded side opening for thermometer (#7 accepts 6-7mm O.D.). Thread forms a compression seal with 5029 nylon bushing and FETFE o-ring (included) and permits vertical adjustment of thermometer. Uses 6508 or 6510 clamps for securing flask head to flask. See 6495 for gaskets. </p>