Septum Stopper, Suba-Seal, For 19/22-19/38 Outer Joints and 17.5mm ID Tubing, Pack of 100

Details:

Septum Stopper, Suba-Seal, For 24/25-24/40 Outer Joints and 20.5mm ID Tubing, a flanged stopper with a hollow plug and sleeve extension that folds down over the neck of the vessel. In addition to the pull over sleeve, Suba-Seal stoppers have a series of annular serrations on the plug portion of the septa. Each of these serrations depress along the inner wall of the glass vessel to form an extremely effective air-tight seal. Stoppers are made from natural red rubber and sold in the package quantities listed below.