DURAN® PTFE Coated GL 45 silicone septum for piercing

High purity PTFE coated silicone septum for use with DURAN® GL 45 open topped screw cap and all sizes of DURAN® GL 45 laboratory bottles. Can be used for the addition, inoculation or sampling using a syringe and needle. Ideal for chemistry, life science and biopharma laboratories.

  • Soft silicone rubber for easy needle penetration and resealability
  • Manufactured from high purity, Platinum catalysed silicone rubber and high quality PTFE film, reducing the risk of solvent contamination
  • The silicone is faced with highly resistant PTFE to protect the silicone from chemical attack by the solvents
  • The septum is suitable for use with all GL 45 sizes of the DURAN® GL 45 bottles from 100 to 20,000 ml
  • A liquid tight seal is provided when used in combination with the red PBT GL 45 open topped screw cap
  • Wide temperature usage range from – 50 °C up to + 180 °C
  • Autoclavable at 121 °C for 15 minutes
  • Dry heat sterilizable at up to 180 °C
  • Download Product Flyer

    Silicone bottle holder

    • Can be used with a wide range of DURAN® bottles
      and glassware
    • Increases stability when working with bottles and
      bottle systems
    • Helps to make work safer and more convenient
    • Autoclavable
    • Made from chemically resistant silicone
    • Product page

    Stirred reactors for DURAN® Laboratory bottles

    Connection Systems & Caps:

    DURAN® Brombobutyl Rubber Stopper

    DURAN® bromobutyl rubber closure provide a gas tight seal for all GL 25 and GL 45 laboratory bottles. Bromobutyl rubber is essentially impermeable to most gasses, and provides a controlled environment inside the glass bottle for oxygen sensitive materials. Useful for maintaining anaerobic culture conditions. Butyl rubber allows for multiple punctures providing easy access to the contents with a syringe.

    • Stopper shape, and material properties optimised to fit 10 and 25 ml DURAN® GL 25 bottles and DURAN® GL 45 bottles with sizes from 100 to 20,000 ml.
    • Low permeability to air, gases and moisture.
    • Manufactured from a high purity bromobutyl rubber elastomer.
    • Conforms to EP 3.2.9 Type I closure for chemical and penetration tests..
    • Material is virtually free of organics that might leach into the incubation medium.
    • Elastic material for effective sealing and reliable self-sealing after needle piercing.
    • Upper surface features seven numbered hemispherical impressions for needle-piercing.
    • Wide usable temperature range: -50 to +121 °C.
    • Suitable for autoclaving / steam sterilising at 121 °C for 20 minutes.
    • Use with the DURAN® GL 25 / GL 45 open topped / aperture screw cap for extra security.
    • Download Product Flyer
    • Download FAQs

    You can find further information about the DURAN® GL 45 Bromobutyl Rubber Stopper here.



    DURAN® Stainless Steel 2 or 3-Port Connector Cap GL 45

    A robust and durable tubing connection system for use with all sizes of DURAN® GL 45 laboratory and media bottles. The bottle top adaptor facilitates the transfer of liquids within a closed and sterile system. Ideal for chemistry, life science and biopharma laboratories.

    • GL 45 connector cap can be used for all sizes of DURAN® GL 45 bottles from 100 to 20,000 ml
    • The two or three barbed, male hose connectors on both the top and bottom assemblies are suitable for flexible tubing with a 8.0 mm inner diameter
    • Freely rotating stainless steel centre allows the bottle to be unscrewed without the need to disconnect the tubing
    • The connectors are slightly splayed to facility easier attachment of the tubing
    • A liquid tight seal is provided by a silicone gasket and the red PBT GL 45 screw cap
    • Wide temperature usage range (up to 180 °C)
    • Autoclavable (@ 121 °C / 15 minutes)
    • Retrace coded for full traceability
    • Download Product Information

    Connection Systems



    GL 45 Screw Caps

    GLS 80® Screw Caps