On request, our factory will also handle the complete assembly of your components into which our glass products are fitted – from scheduling the parts up to shipment. In our Waldkappel factory, we already manufacture various modules and sub-assemblies for several of our long-standing customers. You have a specific task that you would like to sub-contract to a reliable and competent partner? Simply contact us – together with you we can find a suitable solution. The following brief summary describes the different joining techniques that we can presently offer our customers.

Glass-to-glass fusion

The simplest method to join separate glass parts is by means of fusion (melting). Hereby, no other materials are required to create a reliable joint, provided that the parts are of the same type of glass. Fused glass-to-glass joints are strong as well as temperature-resistant, and the joint has the same technical properties as the type of glass used. Moreover, fused joints enable gastight seals to be made.

Glass-to-metal fusion

Glass can be fused directly to metal, if the linear expansion coefficients of glass and metal are very similar. Such a fused joint can also provide a gastight seal between glass and metal.

Like glass-to-glass joints, glass-to-metal bonds are very strong and temperature-resistant to a wide extent. However, the joint must not be heated excessively or cool down too fast, since this will lead to thermal stress in the glass. The result is cracks and leaks – breaking is also possible.

Glass bonding with synthetic resins

The most cost-effective bonds are made with resins based on acrylate or epoxy. This type of bonding is mostly used in applications in which the joint is not subjected to high loads, such as high temperatures or contact with strong acids or lyes. The method also permits simple and cost-effective bonds to be made between plastic and glass. We can supply suitable adhesives for a range of applications.

Glass bonding with ceramic adhesive

As opposed to synthetic resin adhesives, glass bonds made with a ceramic adhesive are far more resistant to high temperatures, acids, and lyes. Ceramic adhesives can even be used to create gastight joints. While the binding agent is being burnt out of the adhesive, an ion exchange takes place between the glass and the adhesive's ceramic ingredients. This results in a high-strength bond. Due to the adhesive's ceramic content, the bonded joint is not transparent, but has a grey appearance.

  • 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