Ace Glass 12014-52

<p><strong>69mm OD Top x 45mm OD Bottom Neoprene Stopper Cone </strong> </p> <p>Pluro stoppers are nested rings cut from the same stopper and will give a vacuum tight fit for all openings within its size range. Black rubber is suitable for most applications from -40 to 150 degrees F. Silicone stoppers have a higher servicable temperature of -100 to 450 degrees F. The black neoprene cones differ in that thay are all the same size and are used primarily to support funnels. Color: Black. </p> <table class="dataTable" border="0" width="100%" cellspacing="0" cellpadding="2"><tr><td><strong>Unit of Measure </strong> </td> <td>Pack of 12 pcs </td> </tr> </table>