Circular Designe Gauge Glasses
Gauge glasses for pressurized vessels made from borosilicate glass and passed way special treatment for increased flexion strength. For secure purposes the values of admissible working pressure are eight time bigger compared accordingly  DIN 7080. 
The set consists of gauge glass, gasket and a pad as the last two are considered correspondingly to the working conditions. There are possibilities to order separate elements only. 
Sizes from Dia 24mm х 10mm  to  Dia 265mm х 30mm.