DURAN® Bromobutyl Rubber Stopper, for GL 45 Laboratory bottle, straight plug, natural rubber, grey

Bromobutyl rubber elastomer coforms with EP 3.2.9 Type I closure for chemical and penetration tests
Gas tight seal provides controlled environment in the bottle
Lot specific Certificate of Conformance (CoC)
A Type III Packaging Material DMF (35811) for these products has been filed with the FDA
Elastic material for effective sealing and reliable self-sealing after needle piercing (21-gauge “21G” or smaller)
Multiple punctures providing easy access to the contents with a syringe
Stopper shapes and material properties optimised to fit DURAN® GL 25 or GL 45 bottles
Suitable for autoclaving / steam sterilising at 121 °C for 20 minutes
Wide usable temperature range: -50 to +121 °C

Product Overview

DURAN® bromobutyl rubber closures provide a gas tight seal for GL 25 or GL 45 glass laboratory bottles. Bromobutyl rubber is essentially impermeable to most gases, and provides a controlled environment inside the glass bottle for oxygen sensitive materials. Useful for maintaining anaerobic culture conditions. Bromobutyl rubber allows for multiple punctures providing easy access to the contents with a syringe. A Type III Packaging Material DMF (35811) for these products has been filed with the FDA.