made with imported glass, this sight-glass can stand very high temperatures up to constant 1100o.C or 1200°C. for short periods of time, being used as flame supervision devices and as protection of visualization chambers. It s the only kind of glass that allows the UV and IV rays, letting them pass through without loss.
Colour: white hue.
Visual aspect: white, if seen by the thickness. In frontal view it has excellent transparency and clearness.