| 摘要 |
<p>A silica glass tube (4) is held in the opening (8) of a cylindrical vessel by an O-ring (13). The ring sits on a collar (11) inside the neck of the vessel with a rigid ring (14) around it. A cap (15) is positioned above the joint and held in place by screws. The pressure applied by the cap causes the O-ring to deform towards the glass tube, forming a water tight seal.</p> |
