Glass as strong as steel

Metaglas sight glasses comprise mechanically pre-stressed glass, fused with a dimensionally adapted metal frame/ring.

The company says rupture tests have proved that Metaglas remains leak tight even at pressures far exceeding the design parameters, meaning that even in the unlikely event that a crack does occur, the equipment/process may be kept safely on stream.

According to the company, any crack that does develop at worst may only slightly affect visibility.