The tempering process is what makes Duralex so tough. Glass that has been heated to around 700°C is suddenly cooled by cold air ventilation. This treatment creates controlled stress in the glass which improves most of its physical qualities: resistance of mechanical stress (bending, impacts) and thermal shock. Duralex glass is 2.5 times stronger than annealed glass and resistant to a thermal shock of 130°C. This also applies to tempered glass that is used to make windscreens. Upon impact or accident, they burst into thousands of blunt pieces.
500 ml (17,5oz)
Diameter 9,4 cm (3,75″)
Height 14,5 cm (5,75″)
This price is for a box of 6 glasses