- ULTRA RESISTANT BOROSILICATE GLASS – Heavy and thick quality dishes made from Borosilicate Glass with a smooth long lasting polished finish to be extremely resistant to many forms of damage i.e. scratches. These Pyrex dishes can be used in extreme temperatures varying from -40 °C to +300 °C. They are also Thermal Shock Resistant up to 220 °C, hence they can go directly from the freezer at a temperature of - 20 °C and into the oven at a temperature of 200 °C.