It is a reliable and chemically resistant cap designed for safe solvent waste disposal in laboratory environments. It features a freely movable PTFE insert for secure sealing and reliable connections. The cap supports three UNF1/4" fittings suitable for capillaries with outer diameters of 1.6, 2.2, and 3.2 mm, one GL14 thread compatible with b.safe exhaust air filters (filter not included), and one NPT1/8" hose connection for tubing with inner diameters of 5.5 to 8 mm. This design ensures flexible integration and prevents solvent vapor escape, enhancing laboratory safety.