ILMADUR is one of the world's leading manufacturers of Sight & Gauge glasses today. They provide safety wherever processes in boilers, tanks, reactors, vessels and other containers need to be observed visually.

ILMADUR's worldwide success is due to the outstanding technical characteristics of their borosilicate glass I-420 . This glass has high optical quality for optimum viewing. Furthermore, its extremely high resistance to chemicals and boiler water, as well as its high thermal shock resistance, guarantees long life.

Ilmadur Sight & Gauge glasses naturally meet the highest requirements for quality. They fulfill all the conditions set down by international standards such as DIN 7080, DIN 7081,
MIL G 16356 D, BS 3463, JIS B 8211, and the Austrian ÖNorm M 7353/7354.

ILMADUR's product line includes:
- Round Sight & Gauge glasses in accordance with DIN 7080
- Oblong Sight & Gauge glasses in accordance with DIN 7081/MIL G 16356
- Custom Sight & Gauge glasses made of borosilicate, fused silica or alkali-lime glass

ILMADUR is an approved and certified manufacturer in accordance with AD 2000-Notice W0. ILMADUR's approved quality management system for materials manufacturers has been certified in accordance with the European Pressure Equipment Directive, 97/23/EC.