Septum Stopper, Suba-Seal, For 24/25-24/40 Outer Joints And 20.5mm Id Tubing, Pack Of 100

Details:

Septum stopper, suba-seal, for 29/26-29/42 outer joints and 25.5Mm 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.