Headspace screw vials & caps

The advantages:

  • pressure-tight seal without strenuous crimping
  • cap screws smoothly as it is made from glass-fibre enforced polyamide
  • screw cap may be screwed manually or mechanically (using 19 hex-nut)
  • can be used to a max. of 150°C

Common headspace screw caps are made from metal. Screwing metal on glass, however, causes  much friction. Our own developed screw caps are made from glass-fibre enforced polyamide. They screw smoothly onto our matching headspace vials and require only a torque of < 1 Nm (common > 8 Nm) for a pressure-tight seal.

The glass-fibre enforced polyamide screw cap has a metal ring inserted to allow the use on headspace samplers with magnetic arm.

Design Registration No.: DE 20 2007 008 595.8; Priority Date: 15. June 2007

6 cap colours:
blue (B), green (G), red (R), white (W), black (S), yellow (Y)

Septum material:

3 mm grey butyl rubber / PTFE up to 125 °C
3 mm blue silicone / grey PTFE up to 150 °C
3 mm clear silicone / white PTFE up to 150 °C
3 mm white silicone / red PTFE up to 150 °C
1.5 mm white silicone / red PTFE up to 120 °C

20 ml Headspace vial, graduated:

Our headspace vial is also available graduated.

further information