Across International PTFE 14/20 Joint Thermometer Adapter with Viton O-ring
14/20 joint thermometer adapter with PTFE body and Viton® O-ring for air tight vacuum work.
Adapter has a threaded polypropylene screw cap on top with an inside O-ring for depth adjustment of 6-7mm for straight stem thermometers, glass tubing and other items
Rotating the extracting nut removes the adapter from flask