This Chemglass AF-0070-10 Adapter is in unused condition and is guaranteed to be fully functional. Please feel free to contact us with any questions. Chemglass Adapters For Use With Af-0060 Thru Af-0062 Vacuum Manifolds That Permit The Manifold To Be Utilized With A Multitude Of Standard Glassware Or Tubing Products. The Af-0070 Adapters Are To Be Used With Either A Cajon Fitting On The Main Ports Or At The Ends Of The Manifold With Heavy Wall Rubber Vacuum Tubing. Serrated Hose Connection Adapters List The Od Of The Hose Connection At The Middle Ring. Each Adapter Is Supplied Complete With One #116 Viton O-Ring.