DURAN® GL 45 aluminium screw closures are made from high quality aluminium. They are available as a closed-top cap with a PTFE coated cap liner, or as an open-top GL 45 cap for use with septum or stopper.

• Free of hydrocarbon-based plastics, plasticisers, phthalates, etc
• High temperature usage up to +260 °C for depyrogensation or hot air sterilisation
• Convenient: Thread fits all DURAN® GL 45 glass bottles from 100 ml to 20 L
• Secure sealing with USP <88> Class VI PTFE coated silicone cap liner
• Cap liner is supplied unmounted for easy processing and is replaceable
• Convenient opening and re-closing as the knurling provides extra grip for wet or gloved hands
• Protection: Electrically conductive material – ESD dissipation
• Extra protection – optional plastic 45 mm over-cap seals the open topped (aperture) cap

Aluminium is an alternative material to the plastic used in most screw closures for laboratory bottles. Metal closures offer a wide range of temperature tolerances and have a high mechanical strength. Aluminium offers superior barrier qualities that protect against light, moisture, oxygen and other gases.

For high and low temperature processing and applications as well as for pharma API.