PTFE – Polytetrafluorethylene

Discovered in 1938 by research-chemists of the DuPont (USA) it was not introduced to the market until 1946. A partly crystalline fluoroplastic that belongs to the family of thermoplastics (but not suitable for injection moulding). The strong bond of the fluorine atom to the carbon atom as well as the almost complete shielding of the unbranched carbon chain by fluorine atoms result in a remarkably high chemical and thermal load. PTFE has a thermal resistance ranging from -260 °C up to +250 °C, at short term up to +300 °C (e. g. no brittleness in boiling helium at -269 °C). This temperature range is not reached by any other plastic material. The continuous operating temperature depends on the load. This means that PTFE can be used from -200 °C to +250 °C at moderate mechanical load. PTFE labware has a white appearance and a non-adhesive surface which is easy to clean. Furthermore, this material has excellent slip characteristics. A lubrication of turning steel or glass shafts is not necessary. Semi-finished PTFE rods are fabricated by isostatic pressing processes or extrusion. The final products are produced by machining the semi-finished materials.




GRUENSFELD. Eugen Hellinger has been working at the BOHLENDER GmbH for 30 years now for which he was honoured from Managing Director...
Grünsfeld. Besides the already existing product brands at company BOHLENDER, BOLA and SICCO, a new brand has now been developed for...

BOLA catalogue

Order your free catalogue!

Know what's on

Subscribe for the BOLA newsletter now and receive regular information about the lab.

Made to Measure

You need a desiccator which is not in our standard product range? No problem – simply send a sketch.