Spare glass Bulb for Hero's Engine, Each

Details

The spare bulb for the Hero's Engine apparatus provides the essential piece for demonstrating the functionality of a steam engine. Boiling water is added to the bulb, causing steam to be released from the vents that are at 90 degree angles and this causes rapid rotation.Eisco Labs Borosilicate glass has the following heat tolerances: Strain Point -515°C | Annealing Point 565°C | Softening Point 820°C.