Three GL-threaded necks for connection of hard-walled tubing and tubes made of glass, plastic, or metal by means of BOLA laboratory screw joints.

• Completely made of PTFE
• Cone with elevated sealing rings on the outside
• Knurled grip for easy removal
• Universal chemical resistance

Easy extension of connections on glass lids with ground joint. For leading in and removal of liquids in glass reactors without contamination of the media through the ambient air. The product is only exposed to PTFE.