We manufacture glass spirals in a wide range of shapes and sizes. Apart from the classical round forms, we can also supply square, rectangular or triangular types. A characteristic feature of all glass spirals is a glass rod that is coiled in a continuous longitudinal direction. Hereby, different winding pitches are possible, as well as different diameters and wall thicknesses.


In the past, we have produced the following glass spiral shapes for our customers:

  • circular and oval
  • square and rectangular
  • triangular
  • hexagonal

A decisive dimension is the internal diameter of the spirals, which can be anywhere in the range of 2-20 mm. Thanks to new machines and tools, we can also produce even larger diameters.
The diameter of the coiled glass rod can vary from very thin to very thick, and depends of the required diameter and pitch of the finished spiral.


Borosilicate glass is a high-quality material. It is chemically highly resistant, and is easy to shape and form. Moreover, borosilicate glass has good thermal shock resistance, and is transparent. For further details, please refer to out technical data sheets.


The enormous flexibility of glass spirals and springs is astounding. Due their wall thickness and their shape, they can be bent and knotted very easily. This also applies for large-diameter spirals. Considering that they consist of glass, the elasticity of the spirals is high – they can be compressed and expanded. These properties can be influenced considerably by the pitch and the diameter of the coiled rod.

  • Glass tube with side-opening
  • Glass fibers with sphere formed end
  • NMR Tubes with thread for low vacuum applications
  • Mark tubes with special inner surface
  • Mini test tubes with extended flange
  • New preform for redrawing of capillaries
  • Test tubes with sagging at the bottom
  • Cloning cylinders with numbering
  • Large-volume theta cross-section capillaries
  • High tightness with new standard cap
  • Complex component made of quartz glass
  • Dropper pipettes in many sizes and designs
  • Packing glasses protected from light
  • Ampoules with built-in test leckage
  • Thick-walled sample vessels
  • Measuring ampoules with conical bottom
  • Special glass capillaries for measurements
  • Glass capillaries with constriction
  • Finely scaled glass cannulas
  • CNC processing of glass plates
  • New 5 mm NMR standard caps
  • Glass crucible for thermal analyses
  • Glass capillaries with graduation
  • Square capillary with 9 internal channels
  • 9-fold capillary made of borosilicate glass 3.3
  • Our tool for cutting glass capillaries
  • Diamond wire for cutting capillaries
  • Sight glasses (laser structured)
  • Very thick-walled capillaries
  • Polyimide coated filling needles
  • Ampoules with small volume
  • NMR tubes colored (UV protection)
  • NMR septum caps (increased denseness)
  • NMR tubes (barcode & constriction)
  • Mark tubes with perforated bottom
  • Test tubes with hole e.g. as vent
  • Test tubes with grooved rim
  • Oval capillaires (thin-walled)
  • Triangular capillaries (thin-walled)
  • Twisted capillaries by hot forming
  • Multi-channel capillaries (circular array)
  • Special light pipe made of glass
  • Luggin-capillary for measurements
  • Test mandrels (different materials)
  • Carpoules with special-rolled rim
  • Glass capillary for the stimulation
  • XRD-capillary with Luer-connector
  • Glass nozzle with seal-and retaining ring
  • Glass capillary with side-mounted connectors
  • Easily destructible glass ampoules
  • Glass rods with surface patterning
  • Long-conical focusing nozzles
  • Surface patterning of glass substrates
  • Laser sublimation-drilling in flat capillaries
  • Thin needles up to 180 ° flexible
  • Glass needles with curved tip
  • Polished to precision glass rings
  • Glass rods with partially-frosted surface
  • Sealing glass with high thermal expansion